./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/id2_i5_o5-2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/id2_i5_o5-2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:27:57,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:27:57,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:27:57,518 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:27:57,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:27:57,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:27:57,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:27:57,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:27:57,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:27:57,541 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:27:57,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:27:57,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:27:57,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:27:57,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:27:57,545 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:27:57,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:27:57,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:27:57,546 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:27:57,546 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:27:57,546 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:27:57,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:27:57,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:27:57,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:27:57,548 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:27:57,552 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:27:57,552 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:27:57,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:27:57,552 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:27:57,553 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:27:57,553 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:27:57,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:27:57,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:27:57,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:27:57,554 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:27:57,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:27:57,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:27:57,555 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:27:57,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:27:57,556 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:27:57,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:27:57,557 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:27:57,557 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:27:57,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:27:57,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:27:57,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:27:57,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:27:57,822 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:27:57,823 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:27:57,824 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/id2_i5_o5-2.yml/witness-2.1.yml [2024-09-13 10:27:57,889 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:27:57,889 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:27:57,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2024-09-13 10:27:59,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:27:59,426 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:27:59,426 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2024-09-13 10:27:59,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c2c893799/77e41adf03a2433c9c41b08a10c9a6dc/FLAGbdc448a18 [2024-09-13 10:27:59,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c2c893799/77e41adf03a2433c9c41b08a10c9a6dc [2024-09-13 10:27:59,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:27:59,448 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:27:59,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:27:59,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:27:59,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:27:59,455 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 10:27:57" (1/2) ... [2024-09-13 10:27:59,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e553ac3 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:59, skipping insertion in model container [2024-09-13 10:27:59,457 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 10:27:57" (1/2) ... [2024-09-13 10:27:59,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56db9ea7 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:59, skipping insertion in model container [2024-09-13 10:27:59,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:27:59" (2/2) ... [2024-09-13 10:27:59,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e553ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59, skipping insertion in model container [2024-09-13 10:27:59,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:27:59" (2/2) ... [2024-09-13 10:27:59,468 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:27:59,471 INFO L1541 ArrayList]: Function contract at [L9]: requires null, ensures ((((((\old(x) == 0) || (\old(x) == 4)) || ((5 == \result) && (5 == \old(x)))) || ((((3 == \result) && (\old(x) <= 4)) || (\old(x) == 2)) && (2 <= \old(x)))) || (((\result == 1) && (\old(x) <= 2)) && (1 <= \old(x)))) || (5 < \old(x))) [2024-09-13 10:27:59,471 INFO L1541 ArrayList]: Function contract at [L14]: requires null, ensures ((((((\old(x) == 0) && (\result == 0)) || (\old(x) == 1)) || (((\result == 2) && (\old(x) <= 3)) && (2 <= \old(x)))) || (4 < \old(x))) || (((3 == \old(x)) || (\result == 4)) && (3 <= \old(x)))) [2024-09-13 10:27:59,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:27:59,639 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/recursive-simple/id2_i5_o5-2.c[548,561] [2024-09-13 10:27:59,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:27:59,660 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 10:27:59,719 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/recursive-simple/id2_i5_o5-2.c[548,561] [2024-09-13 10:27:59,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:27:59,738 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:27:59,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59 WrapperNode [2024-09-13 10:27:59,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:27:59,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:27:59,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:27:59,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:27:59,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,769 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-09-13 10:27:59,769 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:27:59,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:27:59,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:27:59,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:27:59,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,841 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure id2 is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:27:59,846 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,846 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,858 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,859 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,860 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:27:59,862 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:27:59,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:27:59,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:27:59,863 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (1/1) ... [2024-09-13 10:27:59,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:27:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:27:59,944 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 10:27:59,950 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 10:27:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:27:59,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:27:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2024-09-13 10:27:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2024-09-13 10:27:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:27:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:27:59,999 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-09-13 10:27:59,999 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-09-13 10:28:00,065 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:28:00,067 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:28:00,208 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-09-13 10:28:00,209 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:28:00,239 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:28:00,239 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:28:00,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:00 BoogieIcfgContainer [2024-09-13 10:28:00,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:28:00,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:28:00,244 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:28:00,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:28:00,248 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 10:27:57" (1/4) ... [2024-09-13 10:28:00,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277c8931 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:28:00, skipping insertion in model container [2024-09-13 10:28:00,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:27:59" (2/4) ... [2024-09-13 10:28:00,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277c8931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:28:00, skipping insertion in model container [2024-09-13 10:28:00,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:59" (3/4) ... [2024-09-13 10:28:00,249 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@277c8931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:28:00, skipping insertion in model container [2024-09-13 10:28:00,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:28:00" (4/4) ... [2024-09-13 10:28:00,251 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2024-09-13 10:28:00,269 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:28:00,270 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-09-13 10:28:00,333 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:28:00,339 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;@5b07643e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:28:00,340 INFO L337 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-09-13 10:28:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 10:28:00,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:00,353 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 10:28:00,354 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:00,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash 66667393, now seen corresponding path program 1 times [2024-09-13 10:28:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:00,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365387646] [2024-09-13 10:28:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:00,612 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 10:28:00,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:00,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365387646] [2024-09-13 10:28:00,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365387646] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:00,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:00,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:28:00,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987192895] [2024-09-13 10:28:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:00,620 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 10:28:00,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:00,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 10:28:00,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 10:28:00,652 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:00,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:00,742 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-13 10:28:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:28:00,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 10:28:00,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:00,751 INFO L225 Difference]: With dead ends: 29 [2024-09-13 10:28:00,751 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 10:28:00,754 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:28:00,758 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:00,760 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 64 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 10:28:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-09-13 10:28:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-13 10:28:00,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-09-13 10:28:00,790 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2024-09-13 10:28:00,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:00,791 INFO L474 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-09-13 10:28:00,791 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:00,791 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-09-13 10:28:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 10:28:00,792 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:00,793 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:00,793 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:28:00,793 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting id2Err0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:00,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1814486688, now seen corresponding path program 1 times [2024-09-13 10:28:00,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:00,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619782552] [2024-09-13 10:28:00,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:00,926 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 10:28:00,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:00,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619782552] [2024-09-13 10:28:00,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619782552] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:00,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:00,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 10:28:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372361334] [2024-09-13 10:28:00,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:00,929 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-13 10:28:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-13 10:28:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-09-13 10:28:00,930 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:01,030 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2024-09-13 10:28:01,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 10:28:01,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 10:28:01,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:01,034 INFO L225 Difference]: With dead ends: 34 [2024-09-13 10:28:01,034 INFO L226 Difference]: Without dead ends: 34 [2024-09-13 10:28:01,034 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:28:01,036 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:01,037 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 74 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:01,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-09-13 10:28:01,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2024-09-13 10:28:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-13 10:28:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-09-13 10:28:01,044 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 8 [2024-09-13 10:28:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:01,044 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-09-13 10:28:01,045 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-09-13 10:28:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-13 10:28:01,046 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:01,046 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:01,046 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 10:28:01,047 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:01,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1083742235, now seen corresponding path program 1 times [2024-09-13 10:28:01,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:01,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211319613] [2024-09-13 10:28:01,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:01,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:01,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:01,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211319613] [2024-09-13 10:28:01,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211319613] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:01,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457011477] [2024-09-13 10:28:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:01,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:01,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:01,223 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 10:28:01,227 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 10:28:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:01,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-13 10:28:01,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:01,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:01,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457011477] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:01,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:01,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2024-09-13 10:28:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094704312] [2024-09-13 10:28:01,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:01,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-13 10:28:01,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:01,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-13 10:28:01,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-09-13 10:28:01,453 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 8 states have internal predecessors, (14), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:01,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:01,660 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2024-09-13 10:28:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-13 10:28:01,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 8 states have internal predecessors, (14), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-09-13 10:28:01,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:01,661 INFO L225 Difference]: With dead ends: 55 [2024-09-13 10:28:01,662 INFO L226 Difference]: Without dead ends: 55 [2024-09-13 10:28:01,662 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-09-13 10:28:01,663 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 48 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:01,664 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 139 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:01,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-09-13 10:28:01,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2024-09-13 10:28:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 10:28:01,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-09-13 10:28:01,671 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 11 [2024-09-13 10:28:01,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:01,671 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-09-13 10:28:01,673 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 8 states have internal predecessors, (14), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-09-13 10:28:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 10:28:01,674 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:01,674 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-09-13 10:28:01,690 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:28:01,874 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 10:28:01,875 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting id2Err0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:01,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash -479314984, now seen corresponding path program 1 times [2024-09-13 10:28:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434411579] [2024-09-13 10:28:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:01,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:02,201 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:02,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:02,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434411579] [2024-09-13 10:28:02,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434411579] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:02,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598905362] [2024-09-13 10:28:02,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:02,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:02,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:02,206 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 10:28:02,208 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 10:28:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:02,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 10:28:02,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:02,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:02,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598905362] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:02,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 13 [2024-09-13 10:28:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667678789] [2024-09-13 10:28:02,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:02,375 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-13 10:28:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:02,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-13 10:28:02,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-09-13 10:28:02,376 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:02,656 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2024-09-13 10:28:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-09-13 10:28:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:02,658 INFO L225 Difference]: With dead ends: 63 [2024-09-13 10:28:02,658 INFO L226 Difference]: Without dead ends: 63 [2024-09-13 10:28:02,658 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-09-13 10:28:02,659 INFO L434 NwaCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:02,659 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 217 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:28:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-09-13 10:28:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2024-09-13 10:28:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 39 states have internal predecessors, (48), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-09-13 10:28:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-09-13 10:28:02,666 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 20 [2024-09-13 10:28:02,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:02,666 INFO L474 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-09-13 10:28:02,666 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:02,666 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-09-13 10:28:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 10:28:02,667 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:02,667 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-09-13 10:28:02,683 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 10:28:02,867 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 10:28:02,868 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:02,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:02,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1495293869, now seen corresponding path program 2 times [2024-09-13 10:28:02,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847928626] [2024-09-13 10:28:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:03,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847928626] [2024-09-13 10:28:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847928626] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:03,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-09-13 10:28:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267455649] [2024-09-13 10:28:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:03,107 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 10:28:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:03,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 10:28:03,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:28:03,108 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 17 states, 16 states have (on average 1.0) internal successors, (16), 9 states have internal predecessors, (16), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:03,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:03,330 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2024-09-13 10:28:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-09-13 10:28:03,331 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.0) internal successors, (16), 9 states have internal predecessors, (16), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-09-13 10:28:03,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:03,331 INFO L225 Difference]: With dead ends: 58 [2024-09-13 10:28:03,332 INFO L226 Difference]: Without dead ends: 58 [2024-09-13 10:28:03,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2024-09-13 10:28:03,333 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:03,333 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 131 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:28:03,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-09-13 10:28:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-09-13 10:28:03,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 36 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:28:03,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2024-09-13 10:28:03,343 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 23 [2024-09-13 10:28:03,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:03,343 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2024-09-13 10:28:03,343 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.0) internal successors, (16), 9 states have internal predecessors, (16), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2024-09-13 10:28:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-13 10:28:03,345 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:03,345 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:03,345 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 10:28:03,345 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:03,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1493579538, now seen corresponding path program 1 times [2024-09-13 10:28:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:03,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95088664] [2024-09-13 10:28:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:03,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-13 10:28:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:03,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95088664] [2024-09-13 10:28:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95088664] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:03,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680056935] [2024-09-13 10:28:03,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:03,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:03,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:03,624 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 10:28:03,625 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 10:28:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:03,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 10:28:03,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:03,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680056935] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:04,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:04,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 26 [2024-09-13 10:28:04,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360670326] [2024-09-13 10:28:04,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:04,108 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-09-13 10:28:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-09-13 10:28:04,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2024-09-13 10:28:04,112 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 27 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 17 states have internal predecessors, (29), 12 states have call successors, (12), 11 states have call predecessors, (12), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:04,434 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2024-09-13 10:28:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:04,435 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 17 states have internal predecessors, (29), 12 states have call successors, (12), 11 states have call predecessors, (12), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-09-13 10:28:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:04,436 INFO L225 Difference]: With dead ends: 56 [2024-09-13 10:28:04,436 INFO L226 Difference]: Without dead ends: 56 [2024-09-13 10:28:04,437 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2024-09-13 10:28:04,440 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:04,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 222 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:28:04,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-13 10:28:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2024-09-13 10:28:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 10:28:04,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-09-13 10:28:04,448 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 23 [2024-09-13 10:28:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:04,448 INFO L474 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-09-13 10:28:04,449 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 17 states have internal predecessors, (29), 12 states have call successors, (12), 11 states have call predecessors, (12), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:28:04,449 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-09-13 10:28:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 10:28:04,449 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:04,450 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2024-09-13 10:28:04,467 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 10:28:04,653 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:28:04,654 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting id2Err0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:04,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1100070156, now seen corresponding path program 2 times [2024-09-13 10:28:04,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:04,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689417553] [2024-09-13 10:28:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:04,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:04,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689417553] [2024-09-13 10:28:04,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689417553] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:04,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:28:04,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-09-13 10:28:04,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933669817] [2024-09-13 10:28:04,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:04,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-13 10:28:04,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:04,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-13 10:28:04,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-09-13 10:28:04,892 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 10 states have internal predecessors, (18), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:05,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:05,103 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2024-09-13 10:28:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-13 10:28:05,104 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.0) internal successors, (18), 10 states have internal predecessors, (18), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-09-13 10:28:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:05,104 INFO L225 Difference]: With dead ends: 51 [2024-09-13 10:28:05,104 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 10:28:05,105 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2024-09-13 10:28:05,106 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:05,106 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:05,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 10:28:05,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-13 10:28:05,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:05,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2024-09-13 10:28:05,110 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 26 [2024-09-13 10:28:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:05,110 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2024-09-13 10:28:05,110 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.0) internal successors, (18), 10 states have internal predecessors, (18), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:28:05,111 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2024-09-13 10:28:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-13 10:28:05,111 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:05,111 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:05,112 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 10:28:05,112 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting id2Err0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:05,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash -633165964, now seen corresponding path program 1 times [2024-09-13 10:28:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35073310] [2024-09-13 10:28:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 10:28:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,365 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:05,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35073310] [2024-09-13 10:28:05,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35073310] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:05,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540749661] [2024-09-13 10:28:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:05,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:05,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:05,402 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 10:28:05,403 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 10:28:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:05,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 10:28:05,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:28:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540749661] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:05,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:05,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 24 [2024-09-13 10:28:05,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935359430] [2024-09-13 10:28:05,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:05,757 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 10:28:05,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 10:28:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-09-13 10:28:05,758 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand has 25 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 16 states have internal predecessors, (29), 11 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:06,014 INFO L93 Difference]: Finished difference Result 43 states and 42 transitions. [2024-09-13 10:28:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:06,014 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 16 states have internal predecessors, (29), 11 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2024-09-13 10:28:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:06,015 INFO L225 Difference]: With dead ends: 43 [2024-09-13 10:28:06,015 INFO L226 Difference]: Without dead ends: 43 [2024-09-13 10:28:06,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2024-09-13 10:28:06,016 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:06,017 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 255 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 10:28:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-09-13 10:28:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-09-13 10:28:06,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:06,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2024-09-13 10:28:06,025 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 26 [2024-09-13 10:28:06,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:06,025 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2024-09-13 10:28:06,025 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 16 states have internal predecessors, (29), 11 states have call successors, (11), 9 states have call predecessors, (11), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:28:06,025 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2024-09-13 10:28:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 10:28:06,026 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:06,026 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:06,043 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 10:28:06,227 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:06,227 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:06,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash 849139190, now seen corresponding path program 1 times [2024-09-13 10:28:06,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:06,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415509222] [2024-09-13 10:28:06,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:06,355 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-13 10:28:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:06,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:06,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:06,472 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:28:06,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415509222] [2024-09-13 10:28:06,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415509222] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:06,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899642455] [2024-09-13 10:28:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:06,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:06,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:06,474 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 10:28:06,476 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 10:28:06,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:06,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-13 10:28:06,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:28:06,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-13 10:28:06,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899642455] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:06,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:06,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2024-09-13 10:28:06,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882982874] [2024-09-13 10:28:06,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:06,839 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-09-13 10:28:06,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-09-13 10:28:06,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2024-09-13 10:28:06,840 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 23 states, 20 states have (on average 1.4) internal successors, (28), 15 states have internal predecessors, (28), 9 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 10:28:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:07,007 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2024-09-13 10:28:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:07,008 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 1.4) internal successors, (28), 15 states have internal predecessors, (28), 9 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2024-09-13 10:28:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:07,009 INFO L225 Difference]: With dead ends: 42 [2024-09-13 10:28:07,009 INFO L226 Difference]: Without dead ends: 42 [2024-09-13 10:28:07,010 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2024-09-13 10:28:07,011 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 32 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:07,011 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 176 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-13 10:28:07,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-09-13 10:28:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 29 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 41 transitions. [2024-09-13 10:28:07,018 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 41 transitions. Word has length 29 [2024-09-13 10:28:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:07,018 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 41 transitions. [2024-09-13 10:28:07,019 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 1.4) internal successors, (28), 15 states have internal predecessors, (28), 9 states have call successors, (10), 7 states have call predecessors, (10), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-13 10:28:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2024-09-13 10:28:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 10:28:07,019 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:07,019 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 10:28:07,037 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-13 10:28:07,220 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:07,220 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting id2Err0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:07,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash -651760112, now seen corresponding path program 2 times [2024-09-13 10:28:07,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:07,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733942728] [2024-09-13 10:28:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:07,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,332 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 10:28:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,466 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:28:07,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:07,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733942728] [2024-09-13 10:28:07,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733942728] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:07,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488191014] [2024-09-13 10:28:07,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:07,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:07,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:07,489 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 10:28:07,491 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 10:28:07,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:28:07,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:07,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-13 10:28:07,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:07,575 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:28:07,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-09-13 10:28:07,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488191014] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:07,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:07,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2024-09-13 10:28:07,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696250840] [2024-09-13 10:28:07,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:07,777 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 10:28:07,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:07,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 10:28:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-09-13 10:28:07,779 INFO L87 Difference]: Start difference. First operand 42 states and 41 transitions. Second operand has 21 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 10:28:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:07,919 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2024-09-13 10:28:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:07,921 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 32 [2024-09-13 10:28:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:07,922 INFO L225 Difference]: With dead ends: 41 [2024-09-13 10:28:07,922 INFO L226 Difference]: Without dead ends: 41 [2024-09-13 10:28:07,922 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2024-09-13 10:28:07,923 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:07,923 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 188 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-09-13 10:28:07,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-09-13 10:28:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 40 transitions. [2024-09-13 10:28:07,928 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 40 transitions. Word has length 32 [2024-09-13 10:28:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:07,929 INFO L474 AbstractCegarLoop]: Abstraction has 41 states and 40 transitions. [2024-09-13 10:28:07,929 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 14 states have internal predecessors, (26), 7 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 10:28:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2024-09-13 10:28:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-13 10:28:07,930 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:07,930 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 10:28:07,952 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-13 10:28:08,130 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-09-13 10:28:08,131 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting idErr0ENSURES_VIOLATIONPOST_CONDITION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:08,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:08,131 INFO L85 PathProgramCache]: Analyzing trace with hash 961657306, now seen corresponding path program 2 times [2024-09-13 10:28:08,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:08,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307230846] [2024-09-13 10:28:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:08,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-13 10:28:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,357 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 10:28:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307230846] [2024-09-13 10:28:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307230846] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885901678] [2024-09-13 10:28:08,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 10:28:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:08,455 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 10:28:08,456 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 10:28:08,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 10:28:08,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 10:28:08,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-13 10:28:08,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 10:28:08,540 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:28:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-09-13 10:28:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885901678] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:28:08,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:28:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2024-09-13 10:28:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018699718] [2024-09-13 10:28:08,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:28:08,748 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 10:28:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 10:28:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:28:08,749 INFO L87 Difference]: Start difference. First operand 41 states and 40 transitions. Second operand has 17 states, 15 states have (on average 1.4) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 10:28:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:08,863 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2024-09-13 10:28:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-13 10:28:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.4) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2024-09-13 10:28:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:08,864 INFO L225 Difference]: With dead ends: 40 [2024-09-13 10:28:08,864 INFO L226 Difference]: Without dead ends: 40 [2024-09-13 10:28:08,865 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:28:08,865 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:08,865 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 205 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:28:08,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-09-13 10:28:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-09-13 10:28:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.0) internal successors, (27), 27 states have internal predecessors, (27), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 10:28:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 39 transitions. [2024-09-13 10:28:08,872 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 39 transitions. Word has length 35 [2024-09-13 10:28:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:08,874 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 39 transitions. [2024-09-13 10:28:08,874 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.4) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 10:28:08,875 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 39 transitions. [2024-09-13 10:28:08,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-09-13 10:28:08,875 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:28:08,876 INFO L216 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:28:08,895 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 10:28:09,076 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:09,076 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [id2Err0ENSURES_VIOLATIONPOST_CONDITION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, idErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:28:09,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:28:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1674586595, now seen corresponding path program 1 times [2024-09-13 10:28:09,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:28:09,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609645665] [2024-09-13 10:28:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:09,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:28:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 10:28:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:09,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 10:28:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 10:28:09,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:28:09,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609645665] [2024-09-13 10:28:09,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609645665] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:28:09,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097518047] [2024-09-13 10:28:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:28:09,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:09,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:28:09,426 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 10:28:09,427 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 10:28:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:28:09,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-13 10:28:09,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:28:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-09-13 10:28:09,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 10:28:09,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097518047] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:28:09,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 10:28:09,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 17 [2024-09-13 10:28:09,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405204592] [2024-09-13 10:28:09,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:28:09,581 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:28:09,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:28:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:28:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:28:09,582 INFO L87 Difference]: Start difference. First operand 40 states and 39 transitions. Second operand has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:28:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:28:09,618 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2024-09-13 10:28:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:28:09,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-09-13 10:28:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:28:09,619 INFO L225 Difference]: With dead ends: 38 [2024-09-13 10:28:09,619 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:28:09,619 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-09-13 10:28:09,619 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:28:09,620 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 60 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:28:09,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:28:09,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:28:09,620 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 10:28:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:28:09,620 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2024-09-13 10:28:09,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:28:09,621 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:28:09,621 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-13 10:28:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:28:09,621 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:28:09,623 INFO L785 garLoopResultBuilder]: Registering result SAFE for location id2Err0ENSURES_VIOLATIONPOST_CONDITION (2 of 3 remaining) [2024-09-13 10:28:09,624 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-09-13 10:28:09,624 INFO L785 garLoopResultBuilder]: Registering result SAFE for location idErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 3 remaining) [2024-09-13 10:28:09,641 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 10:28:09,824 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:28:09,827 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2024-09-13 10:28:09,828 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:28:09,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:28:09 BoogieIcfgContainer [2024-09-13 10:28:09,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:28:09,831 INFO L158 Benchmark]: Toolchain (without parser) took 10383.57ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 106.0MB in the beginning and 133.0MB in the end (delta: -26.9MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2024-09-13 10:28:09,831 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 176.2MB. Free memory was 133.9MB in the beginning and 133.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:28:09,831 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 176.2MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:28:09,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.49ms. Allocated memory is still 176.2MB. Free memory was 105.9MB in the beginning and 92.7MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:28:09,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.28ms. Allocated memory is still 176.2MB. Free memory was 92.7MB in the beginning and 91.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:28:09,832 INFO L158 Benchmark]: Boogie Preprocessor took 91.20ms. Allocated memory is still 176.2MB. Free memory was 91.4MB in the beginning and 148.1MB in the end (delta: -56.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-09-13 10:28:09,832 INFO L158 Benchmark]: RCFGBuilder took 378.03ms. Allocated memory is still 176.2MB. Free memory was 148.1MB in the beginning and 134.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:28:09,833 INFO L158 Benchmark]: TraceAbstraction took 9587.08ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 133.9MB in the beginning and 133.0MB in the end (delta: 974.1kB). Peak memory consumption was 87.3MB. Max. memory is 16.1GB. [2024-09-13 10:28:09,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.21ms. Allocated memory is still 176.2MB. Free memory was 133.9MB in the beginning and 133.8MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.09ms. Allocated memory is still 176.2MB. Free memory is still 151.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.49ms. Allocated memory is still 176.2MB. Free memory was 105.9MB in the beginning and 92.7MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.28ms. Allocated memory is still 176.2MB. Free memory was 92.7MB in the beginning and 91.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 91.20ms. Allocated memory is still 176.2MB. Free memory was 91.4MB in the beginning and 148.1MB in the end (delta: -56.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * RCFGBuilder took 378.03ms. Allocated memory is still 176.2MB. Free memory was 148.1MB in the beginning and 134.6MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9587.08ms. Allocated memory was 176.2MB in the beginning and 260.0MB in the end (delta: 83.9MB). Free memory was 133.9MB in the beginning and 133.0MB in the end (delta: 974.1kB). Peak memory consumption was 87.3MB. 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: 14]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - PositiveResult [Line: 23]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 9]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9.5s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 418 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 405 mSDsluCounter, 1852 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1672 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2885 IncrementalHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 180 mSDtfsCounter, 2885 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 611 GetRequests, 383 SyntacticMatches, 5 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=4, InterpolantAutomatonStates: 157, 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, 27 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 641 ConstructedInterpolants, 0 QuantifiedInterpolants, 1948 SizeOfPredicates, 19 NumberOfNonLiveVariables, 711 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 27 InterpolantComputations, 5 PerfectInterpolantSequences, 156/496 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:28:09,855 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE