./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound5.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_valuebound5.c ../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound5.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 05:38:15,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 05:38:15,143 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 05:38:15,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 05:38:15,151 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 05:38:15,179 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 05:38:15,180 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 05:38:15,180 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 05:38:15,181 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 05:38:15,182 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 05:38:15,183 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 05:38:15,183 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 05:38:15,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 05:38:15,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 05:38:15,186 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 05:38:15,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 05:38:15,186 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 05:38:15,186 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 05:38:15,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 05:38:15,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 05:38:15,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 05:38:15,188 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 05:38:15,188 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 05:38:15,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 05:38:15,191 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 05:38:15,191 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 05:38:15,191 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 05:38:15,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 05:38:15,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 05:38:15,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 05:38:15,193 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 05:38:15,193 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 05:38:15,194 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:38:15,194 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 05:38:15,194 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 05:38:15,194 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 05:38:15,195 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 05:38:15,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 05:38:15,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 05:38:15,196 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 05:38:15,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 05:38:15,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 05:38:15,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 05:38:15,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 05:38:15,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 05:38:15,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 05:38:15,504 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 05:38:15,504 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 05:38:15,505 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c [2024-09-13 05:38:16,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 05:38:16,980 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 05:38:16,982 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound5.c [2024-09-13 05:38:16,991 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1d966b5ba/ba9eab8930e749628fb6736510ceff7e/FLAG3bc33d04b [2024-09-13 05:38:17,363 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1d966b5ba/ba9eab8930e749628fb6736510ceff7e [2024-09-13 05:38:17,364 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 05:38:17,365 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 05:38:17,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/fermat1-ll_valuebound5.yml/witness-2.1.yml [2024-09-13 05:38:17,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 05:38:17,416 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 05:38:17,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 05:38:17,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 05:38:17,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 05:38:17,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:38:17" (1/2) ... [2024-09-13 05:38:17,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40625cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:38:17, skipping insertion in model container [2024-09-13 05:38:17,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 05:38:17" (1/2) ... [2024-09-13 05:38:17,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c14f72a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 05:38:17, skipping insertion in model container [2024-09-13 05:38:17,428 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 05:38:17" (2/2) ... [2024-09-13 05:38:17,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40625cf4 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17, skipping insertion in model container [2024-09-13 05:38:17,428 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 05:38:17" (2/2) ... [2024-09-13 05:38:17,438 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 05:38:17,438 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 05:38:17,438 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 05:38:17,439 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 05:38:17,439 INFO L1541 ArrayList]: Function contract at [L11]: requires (1 <= \old(cond)), ensures (1 <= \old(cond)) [2024-09-13 05:38:17,454 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 05:38:17,603 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_valuebound5.c[535,548] [2024-09-13 05:38:17,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:38:17,637 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-09-13 05:38:17,667 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_valuebound5.c[535,548] Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-13 05:38:17,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 05:38:17,697 INFO L204 MainTranslator]: Completed translation [2024-09-13 05:38:17,697 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17 WrapperNode [2024-09-13 05:38:17,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 05:38:17,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 05:38:17,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 05:38:17,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 05:38:17,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,710 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,727 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-09-13 05:38:17,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 05:38:17,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 05:38:17,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 05:38:17,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 05:38:17,738 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,740 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,748 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 05:38:17,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,754 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 05:38:17,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 05:38:17,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 05:38:17,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 05:38:17,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (1/1) ... [2024-09-13 05:38:17,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 05:38:17,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:38:17,783 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 05:38:17,786 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 05:38:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 05:38:17,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-13 05:38:17,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-13 05:38:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 05:38:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 05:38:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 05:38:17,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-13 05:38:17,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-13 05:38:17,922 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 05:38:17,924 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 05:38:18,079 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-13 05:38:18,104 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2024-09-13 05:38:18,104 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 05:38:18,126 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 05:38:18,130 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-13 05:38:18,130 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:38:18 BoogieIcfgContainer [2024-09-13 05:38:18,131 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 05:38:18,133 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 05:38:18,136 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 05:38:18,139 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 05:38:18,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 05:38:17" (1/4) ... [2024-09-13 05:38:18,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbbe7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 05:38:18, skipping insertion in model container [2024-09-13 05:38:18,144 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 05:38:17" (2/4) ... [2024-09-13 05:38:18,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbbe7a9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:38:18, skipping insertion in model container [2024-09-13 05:38:18,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 05:38:17" (3/4) ... [2024-09-13 05:38:18,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cbbe7a9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 05:38:18, skipping insertion in model container [2024-09-13 05:38:18,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 05:38:18" (4/4) ... [2024-09-13 05:38:18,146 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound5.c [2024-09-13 05:38:18,162 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 05:38:18,162 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2024-09-13 05:38:18,208 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 05:38:18,214 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;@14d64e5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 05:38:18,215 INFO L337 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-09-13 05:38:18,219 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 05:38:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:38:18,225 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:38:18,225 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:38:18,226 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 05:38:18,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:38:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1887295452, now seen corresponding path program 1 times [2024-09-13 05:38:18,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:38:18,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112380244] [2024-09-13 05:38:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:18,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:38:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:18,367 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:38:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:18,374 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:38:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:18,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:38:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:18,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:38:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:18,392 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 05:38:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:38:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112380244] [2024-09-13 05:38:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112380244] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:38:18,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:38:18,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:38:18,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946067597] [2024-09-13 05:38:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:38:18,402 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-13 05:38:18,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:38:18,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-13 05:38:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-13 05:38:18,438 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 05:38:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:38:18,461 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-09-13 05:38:18,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-13 05:38:18,464 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 05:38:18,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:38:18,470 INFO L225 Difference]: With dead ends: 40 [2024-09-13 05:38:18,471 INFO L226 Difference]: Without dead ends: 38 [2024-09-13 05:38:18,473 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 05:38:18,476 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 05:38:18,477 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 05:38:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-09-13 05:38:18,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-09-13 05:38:18,509 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 05:38:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2024-09-13 05:38:18,512 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2024-09-13 05:38:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:38:18,514 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2024-09-13 05:38:18,514 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 05:38:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2024-09-13 05:38:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-09-13 05:38:18,517 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:38:18,517 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 05:38:18,518 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 05:38:18,518 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 05:38:18,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:38:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash 638953632, now seen corresponding path program 1 times [2024-09-13 05:38:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:38:18,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039774211] [2024-09-13 05:38:18,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:38:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:38:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099590532] [2024-09-13 05:38:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:18,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:38:18,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:38:18,572 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 05:38:18,573 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 05:38:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:18,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 05:38:18,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:38:18,740 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 05:38:18,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 05:38:18,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:38:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039774211] [2024-09-13 05:38:18,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:38:18,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099590532] [2024-09-13 05:38:18,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099590532] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:38:18,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:38:18,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:38:18,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944675692] [2024-09-13 05:38:18,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:38:18,745 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:38:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:38:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:38:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:38:18,747 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 05:38:21,635 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 05:38:23,996 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 05:38:24,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:38:24,023 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2024-09-13 05:38:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:38:24,023 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 05:38:24,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:38:24,025 INFO L225 Difference]: With dead ends: 50 [2024-09-13 05:38:24,025 INFO L226 Difference]: Without dead ends: 50 [2024-09-13 05:38:24,025 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 05:38:24,026 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 05:38:24,027 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 05:38:24,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-13 05:38:24,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-09-13 05:38:24,033 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 05:38:24,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2024-09-13 05:38:24,035 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 24 [2024-09-13 05:38:24,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:38:24,036 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2024-09-13 05:38:24,036 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 05:38:24,037 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2024-09-13 05:38:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 05:38:24,037 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:38:24,038 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 05:38:24,052 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 05:38:24,238 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 05:38:24,239 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 05:38:24,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:38:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 556614719, now seen corresponding path program 1 times [2024-09-13 05:38:24,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:38:24,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270530930] [2024-09-13 05:38:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:24,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:38:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:38:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:38:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:38:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:38:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,419 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 05:38:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:38:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270530930] [2024-09-13 05:38:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270530930] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:38:24,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:38:24,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:38:24,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936199894] [2024-09-13 05:38:24,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:38:24,423 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:38:24,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:38:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:38:24,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:38:24,424 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 05:38:24,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:38:24,438 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2024-09-13 05:38:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:38:24,439 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 05:38:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:38:24,441 INFO L225 Difference]: With dead ends: 48 [2024-09-13 05:38:24,442 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 05:38:24,443 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 05:38:24,444 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 05:38:24,445 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 05:38:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 05:38:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-09-13 05:38:24,455 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 05:38:24,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-09-13 05:38:24,456 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 29 [2024-09-13 05:38:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:38:24,457 INFO L474 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-09-13 05:38:24,457 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 05:38:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-09-13 05:38:24,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-09-13 05:38:24,458 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:38:24,458 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 05:38:24,460 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 05:38:24,462 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 05:38:24,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:38:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash 556614880, now seen corresponding path program 1 times [2024-09-13 05:38:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:38:24,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619443045] [2024-09-13 05:38:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:24,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:38:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:38:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:38:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:38:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:38:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,560 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 05:38:24,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:38:24,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619443045] [2024-09-13 05:38:24,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619443045] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:38:24,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:38:24,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-13 05:38:24,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818422021] [2024-09-13 05:38:24,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:38:24,564 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:38:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:38:24,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:38:24,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-13 05:38:24,565 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 05:38:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:38:24,603 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2024-09-13 05:38:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:38:24,604 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 05:38:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:38:24,604 INFO L225 Difference]: With dead ends: 47 [2024-09-13 05:38:24,605 INFO L226 Difference]: Without dead ends: 47 [2024-09-13 05:38:24,605 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 05:38:24,606 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 05:38:24,609 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 05:38:24,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-13 05:38:24,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-13 05:38:24,613 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 05:38:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2024-09-13 05:38:24,614 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2024-09-13 05:38:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:38:24,615 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2024-09-13 05:38:24,615 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 05:38:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2024-09-13 05:38:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-09-13 05:38:24,616 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:38:24,616 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 05:38:24,617 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-13 05:38:24,617 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 05:38:24,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:38:24,618 INFO L85 PathProgramCache]: Analyzing trace with hash -754765924, now seen corresponding path program 1 times [2024-09-13 05:38:24,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:38:24,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162386157] [2024-09-13 05:38:24,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:24,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:38:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,840 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 05:38:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,845 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-13 05:38:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 05:38:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-13 05:38:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-13 05:38:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:24,908 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 05:38:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:38:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162386157] [2024-09-13 05:38:24,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162386157] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 05:38:24,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 05:38:24,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 05:38:24,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197040999] [2024-09-13 05:38:24,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:38:24,912 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 05:38:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:38:24,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 05:38:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 05:38:24,914 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 05:38:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:38:25,025 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-09-13 05:38:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 05:38:25,026 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 05:38:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:38:25,027 INFO L225 Difference]: With dead ends: 49 [2024-09-13 05:38:25,027 INFO L226 Difference]: Without dead ends: 48 [2024-09-13 05:38:25,027 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 05:38:25,028 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 05:38:25,028 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 05:38:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-09-13 05:38:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-09-13 05:38:25,033 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 05:38:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-09-13 05:38:25,034 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 32 [2024-09-13 05:38:25,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:38:25,034 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-09-13 05:38:25,034 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 05:38:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-09-13 05:38:25,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-09-13 05:38:25,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 05:38:25,035 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 05:38:25,036 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-13 05:38:25,036 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 05:38:25,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 05:38:25,036 INFO L85 PathProgramCache]: Analyzing trace with hash 752447644, now seen corresponding path program 1 times [2024-09-13 05:38:25,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 05:38:25,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566530181] [2024-09-13 05:38:25,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:25,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 05:38:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-13 05:38:25,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647072620] [2024-09-13 05:38:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 05:38:25,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 05:38:25,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 05:38:25,059 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 05:38:25,060 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 05:38:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 05:38:25,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-13 05:38:25,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 05:38:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-13 05:38:25,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 05:38:25,447 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-09-13 05:38:25,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 05:38:25,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566530181] [2024-09-13 05:38:25,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-13 05:38:25,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647072620] [2024-09-13 05:38:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647072620] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-13 05:38:25,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 05:38:25,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-09-13 05:38:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927443130] [2024-09-13 05:38:25,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 05:38:25,449 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-13 05:38:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 05:38:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-13 05:38:25,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-13 05:38:25,450 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 05:38:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 05:38:25,488 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2024-09-13 05:38:25,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-13 05:38:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2024-09-13 05:38:25,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 05:38:25,489 INFO L225 Difference]: With dead ends: 39 [2024-09-13 05:38:25,489 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 05:38:25,489 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-09-13 05:38:25,490 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 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 05:38:25,490 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 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 05:38:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 05:38:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 05:38:25,491 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 05:38:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 05:38:25,491 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2024-09-13 05:38:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 05:38:25,492 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 05:38:25,492 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-09-13 05:38:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 05:38:25,492 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 05:38:25,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 9 remaining) [2024-09-13 05:38:25,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONPRE_CONDITION (7 of 9 remaining) [2024-09-13 05:38:25,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 9 remaining) [2024-09-13 05:38:25,495 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONPRE_CONDITION (5 of 9 remaining) [2024-09-13 05:38:25,496 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 9 remaining) [2024-09-13 05:38:25,496 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONPRE_CONDITION (3 of 9 remaining) [2024-09-13 05:38:25,496 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONPRE_CONDITION (2 of 9 remaining) [2024-09-13 05:38:25,496 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2024-09-13 05:38:25,496 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr1ENSURES_VIOLATIONPOST_CONDITION (0 of 9 remaining) [2024-09-13 05:38:25,513 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 05:38:25,697 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 05:38:25,699 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-09-13 05:38:25,701 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 05:38:25,703 INFO L469 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-09-13 05:38:25,703 INFO L470 ceAbstractionStarter]: WitnessConsidered=3 [2024-09-13 05:38:25,703 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 05:38:25 BoogieIcfgContainer [2024-09-13 05:38:25,703 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 05:38:25,704 INFO L158 Benchmark]: Toolchain (without parser) took 8287.81ms. Allocated memory is still 172.0MB. Free memory was 139.9MB in the beginning and 87.7MB in the end (delta: 52.2MB). Peak memory consumption was 50.1MB. Max. memory is 16.1GB. [2024-09-13 05:38:25,704 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:38:25,704 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 172.0MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 05:38:25,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.81ms. Allocated memory is still 172.0MB. Free memory was 139.9MB in the beginning and 126.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 05:38:25,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.67ms. Allocated memory is still 172.0MB. Free memory was 126.3MB in the beginning and 124.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:38:25,705 INFO L158 Benchmark]: Boogie Preprocessor took 30.13ms. Allocated memory is still 172.0MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 05:38:25,706 INFO L158 Benchmark]: RCFGBuilder took 372.21ms. Allocated memory is still 172.0MB. Free memory was 122.1MB in the beginning and 130.1MB in the end (delta: -8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-13 05:38:25,706 INFO L158 Benchmark]: TraceAbstraction took 7570.94ms. Allocated memory is still 172.0MB. Free memory was 130.1MB in the beginning and 87.7MB in the end (delta: 42.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2024-09-13 05:38:25,707 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 76.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 172.0MB. Free memory is still 142.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.81ms. Allocated memory is still 172.0MB. Free memory was 139.9MB in the beginning and 126.3MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.67ms. Allocated memory is still 172.0MB. Free memory was 126.3MB in the beginning and 124.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.13ms. Allocated memory is still 172.0MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 372.21ms. Allocated memory is still 172.0MB. Free memory was 122.1MB in the beginning and 130.1MB in the end (delta: -8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 7570.94ms. Allocated memory is still 172.0MB. Free memory was 130.1MB in the beginning and 87.7MB in the end (delta: 42.4MB). Peak memory consumption was 41.4MB. 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: 7.5s, OverallIterations: 6, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 5.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 344 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 137 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 207 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 211 ConstructedInterpolants, 0 QuantifiedInterpolants, 825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 177/178 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 05:38:25,728 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE