./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/nla-digbench-scaling/fermat1-ll_valuebound1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound1.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-5189fb6-m [2024-09-13 05:37:15,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:37:15,672 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:37:15,679 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:37:15,680 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:37:15,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:37:15,704 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:37:15,705 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:37:15,705 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:37:15,709 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:37:15,709 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:37:15,709 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:37:15,710 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:37:15,710 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:37:15,710 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:37:15,711 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:37:15,711 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:37:15,711 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:37:15,711 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:37:15,711 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:37:15,712 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:37:15,713 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:37:15,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:37:15,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:37:15,714 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:37:15,714 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:37:15,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:37:15,715 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:37:15,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:37:15,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:37:15,717 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:37:15,717 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:37:15,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:37:15,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:37:15,718 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:37:15,718 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:37:15,718 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:37:15,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:37:15,719 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:37:15,719 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:37:15,719 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:37:15,720 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:37:15,720 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:37:15,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:37:15,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:37:15,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:37:15,975 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:37:15,976 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:37:15,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound1.yml/witness-2.1.yml [2024-09-13 05:37:16,030 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:37:16,031 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:37:16,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2024-09-13 05:37:17,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:37:17,578 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:37:17,579 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound1.c [2024-09-13 05:37:17,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e543d78ce/ee9aa1c3fd7b4251a5e7775bb807240a/FLAGb7642fa05 [2024-09-13 05:37:17,599 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e543d78ce/ee9aa1c3fd7b4251a5e7775bb807240a [2024-09-13 05:37:17,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:37:17,601 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:37:17,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:37:17,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:37:17,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:37:17,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:37:16" (1/2) ... [2024-09-13 05:37:17,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38036b3e and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:37:17, skipping insertion in model container [2024-09-13 05:37:17,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:37:16" (1/2) ... [2024-09-13 05:37:17,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1abfb176 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:37:17, skipping insertion in model container [2024-09-13 05:37:17,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:37:17" (2/2) ... [2024-09-13 05:37:17,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38036b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17, skipping insertion in model container [2024-09-13 05:37:17,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:37:17" (2/2) ... [2024-09-13 05:37:17,627 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:37:17,629 INFO L1541 ArrayList]: Loop invariant at [L35-L55] ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) [2024-09-13 05:37:17,629 INFO L1541 ArrayList]: Loop invariant at [L48-L54] ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) [2024-09-13 05:37:17,630 INFO L1541 ArrayList]: Loop invariant at [L40-L46] ((((__int128) v * 2) + ((__int128) u * u)) == (((((__int128) v * v) + ((__int128) u * 2)) + ((long long) A * 4)) + ((__int128) r * 4))) [2024-09-13 05:37:17,630 INFO L1541 ArrayList]: Function contract at [L11]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 05:37:17,648 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:37:17,847 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/nla-digbench-scaling/fermat1-ll_valuebound1.c[535,548] [2024-09-13 05:37:17,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:37:17,873 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 05:37:17,908 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/nla-digbench-scaling/fermat1-ll_valuebound1.c[535,548] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-13 05:37:17,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:37:17,948 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:37:17,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17 WrapperNode [2024-09-13 05:37:17,949 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:37:17,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:37:17,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:37:17,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:37:17,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:17,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:17,979 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-13 05:37:17,979 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:37:17,980 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:37:17,980 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:37:17,980 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:37:17,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:17,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:17,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:17,999 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure __VERIFIER_assert is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 05:37:18,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,007 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,011 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,013 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:37:18,014 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:37:18,014 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:37:18,014 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:37:18,015 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (1/1) ... [2024-09-13 05:37:18,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:37:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:37:18,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 05:37:18,038 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 05:37:18,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:37:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 05:37:18,074 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 05:37:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 05:37:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:37:18,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:37:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 05:37:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 05:37:18,131 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:37:18,133 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:37:18,280 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 05:37:18,306 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-09-13 05:37:18,306 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:37:18,335 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:37:18,335 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-13 05:37:18,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:37:18 BoogieIcfgContainer [2024-09-13 05:37:18,335 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:37:18,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:37:18,337 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:37:18,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:37:18,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 05:37:16" (1/4) ... [2024-09-13 05:37:18,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199acc6b and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:37:18, skipping insertion in model container [2024-09-13 05:37:18,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:37:17" (2/4) ... [2024-09-13 05:37:18,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199acc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:37:18, skipping insertion in model container [2024-09-13 05:37:18,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:37:17" (3/4) ... [2024-09-13 05:37:18,343 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199acc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:37:18, skipping insertion in model container [2024-09-13 05:37:18,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:37:18" (4/4) ... [2024-09-13 05:37:18,344 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound1.c [2024-09-13 05:37:18,359 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:37:18,359 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-09-13 05:37:18,401 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:37:18,407 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;@125ae561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:37:18,407 INFO L337 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-09-13 05:37:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 29 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-13 05:37:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:37:18,417 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:18,418 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:18,418 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:18,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:18,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1887295452, now seen corresponding path program 1 times [2024-09-13 05:37:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157564223] [2024-09-13 05:37:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:18,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:18,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:37:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:18,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:37:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:18,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:37:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:18,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:37:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:37:18,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:18,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157564223] [2024-09-13 05:37:18,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157564223] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:37:18,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:37:18,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:37:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187593846] [2024-09-13 05:37:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:37:18,609 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 05:37:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 05:37:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 05:37:18,631 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 29 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 05:37:18,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:18,655 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-13 05:37:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 05:37:18,657 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2024-09-13 05:37:18,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:18,661 INFO L225 Difference]: With dead ends: 40 [2024-09-13 05:37:18,662 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 05:37:18,663 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 05:37:18,666 INFO L434 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:18,666 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:37:18,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 05:37:18,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-13 05:37:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-13 05:37:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-09-13 05:37:18,697 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2024-09-13 05:37:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:18,698 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-09-13 05:37:18,698 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-13 05:37:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-09-13 05:37:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:37:18,701 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:18,701 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:18,701 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:37:18,702 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:18,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash 638953632, now seen corresponding path program 1 times [2024-09-13 05:37:18,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:18,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343418413] [2024-09-13 05:37:18,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:18,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:37:18,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516392305] [2024-09-13 05:37:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:18,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:37:18,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:37:18,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:37:18,797 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 05:37:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:18,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 05:37:18,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:37:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:37:18,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:37:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:18,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343418413] [2024-09-13 05:37:18,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:37:18,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516392305] [2024-09-13 05:37:18,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516392305] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:37:18,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:37:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:37:18,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828970843] [2024-09-13 05:37:18,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:37:18,996 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:37:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:18,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:37:18,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:37:18,998 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 05:37:21,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 05:37:24,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-13 05:37:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:24,301 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2024-09-13 05:37:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:37:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2024-09-13 05:37:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:24,303 INFO L225 Difference]: With dead ends: 50 [2024-09-13 05:37:24,303 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 05:37:24,304 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:37:24,305 INFO L434 NwaCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:24,305 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 62 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-09-13 05:37:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 05:37:24,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-13 05:37:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.34375) internal successors, (43), 37 states have internal predecessors, (43), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 05:37:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2024-09-13 05:37:24,314 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 24 [2024-09-13 05:37:24,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:24,315 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2024-09-13 05:37:24,316 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 05:37:24,316 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2024-09-13 05:37:24,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 05:37:24,317 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:24,317 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:24,334 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 05:37:24,521 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:37:24,522 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:24,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:24,523 INFO L85 PathProgramCache]: Analyzing trace with hash 556614719, now seen corresponding path program 1 times [2024-09-13 05:37:24,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:24,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309540367] [2024-09-13 05:37:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:24,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,642 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:37:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:37:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:37:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:37:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:37:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309540367] [2024-09-13 05:37:24,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309540367] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:37:24,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:37:24,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:37:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056853053] [2024-09-13 05:37:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:37:24,666 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:37:24,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:37:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:37:24,667 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 05:37:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:24,678 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-09-13 05:37:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:37:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-09-13 05:37:24,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:24,679 INFO L225 Difference]: With dead ends: 48 [2024-09-13 05:37:24,679 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 05:37:24,680 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:37:24,681 INFO L434 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:24,681 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:37:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 05:37:24,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-13 05:37:24,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 35 states have internal predecessors, (41), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 05:37:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-09-13 05:37:24,688 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 29 [2024-09-13 05:37:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:24,689 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-09-13 05:37:24,689 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 05:37:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-09-13 05:37:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 05:37:24,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:24,690 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:24,691 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 05:37:24,691 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:24,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash 556614880, now seen corresponding path program 1 times [2024-09-13 05:37:24,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:24,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157995845] [2024-09-13 05:37:24,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:24,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:37:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:37:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:37:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:37:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:37:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:24,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157995845] [2024-09-13 05:37:24,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157995845] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:37:24,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:37:24,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:37:24,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916475149] [2024-09-13 05:37:24,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:37:24,750 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:37:24,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:37:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:37:24,751 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 05:37:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:24,781 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-09-13 05:37:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:37:24,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-09-13 05:37:24,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:24,784 INFO L225 Difference]: With dead ends: 47 [2024-09-13 05:37:24,785 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 05:37:24,786 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:37:24,787 INFO L434 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:24,787 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:37:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 05:37:24,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-13 05:37:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 05:37:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2024-09-13 05:37:24,799 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2024-09-13 05:37:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:24,799 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2024-09-13 05:37:24,800 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-09-13 05:37:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2024-09-13 05:37:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 05:37:24,801 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:24,801 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:24,801 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 05:37:24,801 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:24,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash -754765924, now seen corresponding path program 1 times [2024-09-13 05:37:24,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:24,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443745934] [2024-09-13 05:37:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:37:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:37:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:37:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:37:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:24,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:37:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-13 05:37:25,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:25,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443745934] [2024-09-13 05:37:25,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443745934] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:37:25,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:37:25,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:37:25,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154917644] [2024-09-13 05:37:25,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:37:25,020 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:37:25,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:37:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:37:25,021 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 05:37:25,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:25,139 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-13 05:37:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:37:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 32 [2024-09-13 05:37:25,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:25,141 INFO L225 Difference]: With dead ends: 49 [2024-09-13 05:37:25,141 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 05:37:25,141 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:37:25,142 INFO L434 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:25,142 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:37:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 05:37:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-09-13 05:37:25,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-13 05:37:25,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-09-13 05:37:25,154 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 32 [2024-09-13 05:37:25,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:25,154 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-09-13 05:37:25,154 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-09-13 05:37:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-09-13 05:37:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 05:37:25,156 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:25,157 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:25,157 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 05:37:25,157 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:25,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:25,159 INFO L85 PathProgramCache]: Analyzing trace with hash 752447644, now seen corresponding path program 1 times [2024-09-13 05:37:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036357007] [2024-09-13 05:37:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:37:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:37:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:37:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:37:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:37:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-13 05:37:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 05:37:25,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:25,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036357007] [2024-09-13 05:37:25,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036357007] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 05:37:25,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578437866] [2024-09-13 05:37:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:25,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:37:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:37:25,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:37:25,438 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 05:37:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:25,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 05:37:25,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:37:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 05:37:25,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:37:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-09-13 05:37:25,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578437866] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 05:37:25,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 05:37:25,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-09-13 05:37:25,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982506664] [2024-09-13 05:37:25,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 05:37:25,781 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-13 05:37:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-13 05:37:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:37:25,782 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 10 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 05:37:25,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:25,940 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2024-09-13 05:37:25,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-13 05:37:25,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 40 [2024-09-13 05:37:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:25,942 INFO L225 Difference]: With dead ends: 69 [2024-09-13 05:37:25,943 INFO L226 Difference]: Without dead ends: 69 [2024-09-13 05:37:25,943 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-13 05:37:25,944 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:25,944 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 123 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 05:37:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-09-13 05:37:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-09-13 05:37:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 50 states have internal predecessors, (63), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-13 05:37:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2024-09-13 05:37:25,956 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 40 [2024-09-13 05:37:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:25,956 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2024-09-13 05:37:25,956 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.75) internal successors, (22), 6 states have internal predecessors, (22), 6 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-13 05:37:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2024-09-13 05:37:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-09-13 05:37:25,958 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:37:25,958 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:25,974 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 05:37:26,158 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 05:37:26,159 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-09-13 05:37:26,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:37:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash -108633146, now seen corresponding path program 1 times [2024-09-13 05:37:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:37:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875846983] [2024-09-13 05:37:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:37:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:37:26,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425529691] [2024-09-13 05:37:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:37:26,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:37:26,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:37:26,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 05:37:26,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 05:37:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:37:26,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 05:37:26,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:37:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-09-13 05:37:26,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:37:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-09-13 05:37:26,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:37:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875846983] [2024-09-13 05:37:26,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:37:26,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425529691] [2024-09-13 05:37:26,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425529691] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:37:26,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:37:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-09-13 05:37:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969425894] [2024-09-13 05:37:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:37:26,694 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:37:26,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:37:26,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:37:26,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-13 05:37:26,695 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-13 05:37:26,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:37:26,736 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2024-09-13 05:37:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:37:26,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2024-09-13 05:37:26,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:37:26,737 INFO L225 Difference]: With dead ends: 63 [2024-09-13 05:37:26,737 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:37:26,737 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-13 05:37:26,738 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 05:37:26,739 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 05:37:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:37:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:37:26,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 05:37:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:37:26,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-09-13 05:37:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:37:26,740 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:37:26,742 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-09-13 05:37:26,742 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:37:26,742 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:37:26,744 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 9 remaining) [2024-09-13 05:37:26,744 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (7 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (5 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (3 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (2 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-09-13 05:37:26,745 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 9 remaining) [2024-09-13 05:37:26,763 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-13 05:37:26,946 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-13 05:37:26,949 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:37:26,951 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:37:26,952 INFO L469 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-09-13 05:37:26,952 INFO L470 ceAbstractionStarter]: WitnessConsidered=3 [2024-09-13 05:37:26,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:37:26 BoogieIcfgContainer [2024-09-13 05:37:26,953 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:37:26,954 INFO L158 Benchmark]: Toolchain (without parser) took 9353.10ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 76.0MB in the beginning and 148.9MB in the end (delta: -72.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:37:26,954 INFO L158 Benchmark]: Witness Parser took 0.59ms. Allocated memory is still 96.5MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:37:26,954 INFO L158 Benchmark]: CDTParser took 1.50ms. Allocated memory is still 96.5MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:37:26,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.23ms. Allocated memory is still 140.5MB. Free memory was 75.6MB in the beginning and 100.7MB in the end (delta: -25.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-13 05:37:26,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.78ms. Allocated memory is still 140.5MB. Free memory was 100.7MB in the beginning and 99.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:37:26,955 INFO L158 Benchmark]: Boogie Preprocessor took 33.49ms. Allocated memory is still 140.5MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:37:26,955 INFO L158 Benchmark]: RCFGBuilder took 321.34ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 81.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 05:37:26,955 INFO L158 Benchmark]: TraceAbstraction took 8616.37ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 81.3MB in the beginning and 148.9MB in the end (delta: -67.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:37:26,956 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 0.59ms. Allocated memory is still 96.5MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 1.50ms. Allocated memory is still 96.5MB. Free memory is still 39.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.23ms. Allocated memory is still 140.5MB. Free memory was 75.6MB in the beginning and 100.7MB in the end (delta: -25.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.78ms. Allocated memory is still 140.5MB. Free memory was 100.7MB in the beginning and 99.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.49ms. Allocated memory is still 140.5MB. Free memory was 99.3MB in the beginning and 97.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.34ms. Allocated memory is still 140.5MB. Free memory was 97.2MB in the beginning and 81.9MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8616.37ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 81.3MB in the beginning and 148.9MB in the end (delta: -67.6MB). There was no memory consumed. 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: 35]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 40]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 48]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 11]: procedure precondition always holds For all program executions holds that procedure precondition always holds at this location - PositiveResult [Line: 14]: 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: 11]: 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, 40 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 467 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 239 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 259 IncrementalHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 228 mSDtfsCounter, 259 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 311 GetRequests, 292 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=6, InterpolantAutomatonStates: 25, 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, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 386 NumberOfCodeBlocks, 386 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 1352 SizeOfPredicates, 2 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 383/403 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 05:37:26,973 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE