./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/fermat2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 11:19:04,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 11:19:04,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 11:19:04,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 11:19:04,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 11:19:04,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 11:19:04,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 11:19:04,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 11:19:04,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 11:19:04,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 11:19:04,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 11:19:04,301 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 11:19:04,302 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 11:19:04,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 11:19:04,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 11:19:04,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 11:19:04,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 11:19:04,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 11:19:04,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 11:19:04,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 11:19:04,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 11:19:04,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 11:19:04,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 11:19:04,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 11:19:04,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 11:19:04,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 11:19:04,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 11:19:04,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 11:19:04,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 11:19:04,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 11:19:04,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 11:19:04,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 11:19:04,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 11:19:04,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 11:19:04,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 11:19:04,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 11:19:04,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 11:19:04,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 11:19:04,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 11:19:04,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 11:19:04,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 11:19:04,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 11:19:04,347 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 11:19:04,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 11:19:04,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 11:19:04,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 11:19:04,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 11:19:04,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 11:19:04,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 11:19:04,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 11:19:04,360 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 11:19:04,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 11:19:04,361 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 11:19:04,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 11:19:04,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 11:19:04,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 11:19:04,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 11:19:04,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 11:19:04,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 11:19:04,362 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 11:19:04,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 11:19:04,362 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 11:19:04,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 11:19:04,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 11:19:04,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 11:19:04,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 11:19:04,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 11:19:04,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 11:19:04,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 11:19:04,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 11:19:04,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 11:19:04,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 11:19:04,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 11:19:04,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 11:19:04,364 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 11:19:04,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 11:19:04,364 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 11:19:04,364 INFO L138 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c7c57321afe9055366ca260a89f0e4de96718cc528ce2ea2543b13c4af6ed7 [2023-02-15 11:19:04,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 11:19:04,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 11:19:04,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 11:19:04,581 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 11:19:04,582 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 11:19:04,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat2-ll.c [2023-02-15 11:19:05,526 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 11:19:05,705 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 11:19:05,705 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2-ll.c [2023-02-15 11:19:05,711 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4019b32e8/e75411d55a1d4c42af35dd3934c0eb8f/FLAG206c6567a [2023-02-15 11:19:05,721 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4019b32e8/e75411d55a1d4c42af35dd3934c0eb8f [2023-02-15 11:19:05,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 11:19:05,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 11:19:05,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 11:19:05,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 11:19:05,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 11:19:05,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5c77ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05, skipping insertion in model container [2023-02-15 11:19:05,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 11:19:05,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 11:19:05,867 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2-ll.c[524,537] [2023-02-15 11:19:05,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 11:19:05,883 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 11:19:05,891 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat2-ll.c[524,537] [2023-02-15 11:19:05,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 11:19:05,903 INFO L208 MainTranslator]: Completed translation [2023-02-15 11:19:05,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05 WrapperNode [2023-02-15 11:19:05,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 11:19:05,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 11:19:05,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 11:19:05,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 11:19:05,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,926 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-02-15 11:19:05,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 11:19:05,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 11:19:05,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 11:19:05,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 11:19:05,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,937 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,939 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 11:19:05,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 11:19:05,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 11:19:05,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 11:19:05,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (1/1) ... [2023-02-15 11:19:05,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 11:19:05,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:19:05,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 11:19:05,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 11:19:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 11:19:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 11:19:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 11:19:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 11:19:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 11:19:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 11:19:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 11:19:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 11:19:06,032 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 11:19:06,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 11:19:06,168 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 11:19:06,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 11:19:06,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 11:19:06,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:19:06 BoogieIcfgContainer [2023-02-15 11:19:06,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 11:19:06,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 11:19:06,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 11:19:06,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 11:19:06,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:19:05" (1/3) ... [2023-02-15 11:19:06,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d11ee1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:19:06, skipping insertion in model container [2023-02-15 11:19:06,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:19:05" (2/3) ... [2023-02-15 11:19:06,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d11ee1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:19:06, skipping insertion in model container [2023-02-15 11:19:06,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:19:06" (3/3) ... [2023-02-15 11:19:06,185 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll.c [2023-02-15 11:19:06,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 11:19:06,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 11:19:06,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 11:19:06,249 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4ff196dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 11:19:06,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 11:19:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 11:19:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 11:19:06,257 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:19:06,257 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:19:06,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:19:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:19:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1913902111, now seen corresponding path program 1 times [2023-02-15 11:19:06,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:19:06,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26510151] [2023-02-15 11:19:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:19:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:19:06,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 11:19:06,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376402366] [2023-02-15 11:19:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:19:06,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:19:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:19:06,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:19:06,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 11:19:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:19:06,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 11:19:06,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:19:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 11:19:06,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 11:19:06,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:19:06,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26510151] [2023-02-15 11:19:06,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 11:19:06,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376402366] [2023-02-15 11:19:06,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376402366] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 11:19:06,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 11:19:06,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 11:19:06,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98024893] [2023-02-15 11:19:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 11:19:06,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 11:19:06,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:19:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 11:19:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 11:19:06,504 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 11:19:06,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:19:06,518 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2023-02-15 11:19:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 11:19:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-15 11:19:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:19:06,523 INFO L225 Difference]: With dead ends: 45 [2023-02-15 11:19:06,524 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 11:19:06,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 11:19:06,529 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 11:19:06,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 11:19:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 11:19:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 11:19:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 11:19:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 11:19:06,557 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-02-15 11:19:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:19:06,558 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 11:19:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 11:19:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 11:19:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 11:19:06,560 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:19:06,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:19:06,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 11:19:06,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 11:19:06,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:19:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:19:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1584630691, now seen corresponding path program 1 times [2023-02-15 11:19:06,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:19:06,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173575357] [2023-02-15 11:19:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:19:06,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:19:06,792 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 11:19:06,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596377509] [2023-02-15 11:19:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:19:06,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:19:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:19:06,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:19:06,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 11:19:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:19:06,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 11:19:06,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:19:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:19:06,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 11:19:06,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:19:06,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173575357] [2023-02-15 11:19:06,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 11:19:06,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596377509] [2023-02-15 11:19:06,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596377509] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 11:19:06,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 11:19:06,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 11:19:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968268144] [2023-02-15 11:19:06,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 11:19:06,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 11:19:06,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:19:06,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 11:19:06,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 11:19:06,950 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:19:10,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 11:19:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:19:10,890 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-02-15 11:19:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 11:19:10,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-15 11:19:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:19:10,891 INFO L225 Difference]: With dead ends: 31 [2023-02-15 11:19:10,891 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 11:19:10,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 11:19:10,892 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-15 11:19:10,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2023-02-15 11:19:10,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 11:19:10,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2023-02-15 11:19:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 11:19:10,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-02-15 11:19:10,907 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2023-02-15 11:19:10,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:19:10,908 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-02-15 11:19:10,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 11:19:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-02-15 11:19:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 11:19:10,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 11:19:10,911 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 11:19:10,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 11:19:11,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 11:19:11,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 11:19:11,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 11:19:11,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1566339285, now seen corresponding path program 1 times [2023-02-15 11:19:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 11:19:11,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827972989] [2023-02-15 11:19:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:19:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 11:19:11,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 11:19:11,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400643107] [2023-02-15 11:19:11,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 11:19:11,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:19:11,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 11:19:11,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 11:19:11,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 11:19:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 11:19:11,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 11:19:11,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 11:19:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:19:11,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 11:19:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 11:19:11,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 11:19:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827972989] [2023-02-15 11:19:11,397 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 11:19:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400643107] [2023-02-15 11:19:11,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400643107] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 11:19:11,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 11:19:11,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-15 11:19:11,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491519342] [2023-02-15 11:19:11,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 11:19:11,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 11:19:11,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 11:19:11,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 11:19:11,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-15 11:19:11,403 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 11:19:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 11:19:11,581 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2023-02-15 11:19:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 11:19:11,582 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-02-15 11:19:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 11:19:11,582 INFO L225 Difference]: With dead ends: 26 [2023-02-15 11:19:11,582 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 11:19:11,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-02-15 11:19:11,583 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 11:19:11,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 95 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 11:19:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 11:19:11,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 11:19:11,584 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) [2023-02-15 11:19:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 11:19:11,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2023-02-15 11:19:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 11:19:11,585 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 11:19:11,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 11:19:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 11:19:11,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 11:19:11,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 11:19:11,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 11:19:11,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 11:19:11,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 11:19:11,835 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 44) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~A~0#1| 4)) (.cse1 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~u~0#1|)) (.cse3 (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) (and (= (+ .cse0 (* |ULTIMATE.start_main_~r~0#1| 4) .cse1 .cse2) .cse3) (= (+ .cse0 .cse1 .cse2) .cse3))) [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-15 11:19:11,836 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 49) the Hoare annotation is: true [2023-02-15 11:19:11,836 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 33 44) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2023-02-15 11:19:11,836 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 43) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 33 44) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~A~0#1| 4) (* |ULTIMATE.start_main_~r~0#1| 4) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2023-02-15 11:19:11,837 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-15 11:19:11,837 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-02-15 11:19:11,837 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-15 11:19:11,839 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-15 11:19:11,841 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 11:19:11,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 11:19:11 BoogieIcfgContainer [2023-02-15 11:19:11,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 11:19:11,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 11:19:11,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 11:19:11,857 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 11:19:11,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:19:06" (3/4) ... [2023-02-15 11:19:11,859 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 11:19:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-15 11:19:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 11:19:11,865 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-15 11:19:11,865 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 11:19:11,865 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 11:19:11,865 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 11:19:11,910 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 11:19:11,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 11:19:11,911 INFO L158 Benchmark]: Toolchain (without parser) took 6187.08ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 105.1MB in the beginning and 147.8MB in the end (delta: -42.7MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2023-02-15 11:19:11,911 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 11:19:11,911 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.12ms. Allocated memory is still 134.2MB. Free memory was 105.1MB in the beginning and 94.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 11:19:11,911 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.73ms. Allocated memory is still 134.2MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 11:19:11,912 INFO L158 Benchmark]: Boogie Preprocessor took 11.89ms. Allocated memory is still 134.2MB. Free memory was 93.0MB in the beginning and 92.1MB in the end (delta: 918.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 11:19:11,912 INFO L158 Benchmark]: RCFGBuilder took 239.44ms. Allocated memory is still 134.2MB. Free memory was 92.1MB in the beginning and 81.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 11:19:11,912 INFO L158 Benchmark]: TraceAbstraction took 5676.31ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 81.0MB in the beginning and 150.9MB in the end (delta: -69.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 11:19:11,913 INFO L158 Benchmark]: Witness Printer took 53.67ms. Allocated memory is still 190.8MB. Free memory was 150.9MB in the beginning and 147.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 11:19:11,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 111.1MB. Free memory is still 72.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.12ms. Allocated memory is still 134.2MB. Free memory was 105.1MB in the beginning and 94.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.73ms. Allocated memory is still 134.2MB. Free memory was 94.6MB in the beginning and 93.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.89ms. Allocated memory is still 134.2MB. Free memory was 93.0MB in the beginning and 92.1MB in the end (delta: 918.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 239.44ms. Allocated memory is still 134.2MB. Free memory was 92.1MB in the beginning and 81.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5676.31ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 81.0MB in the beginning and 150.9MB in the end (delta: -69.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 53.67ms. Allocated memory is still 190.8MB. Free memory was 150.9MB in the beginning and 147.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 122 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 58 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, InterpolantAutomatonStates: 13, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 87 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 96 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 241 SizeOfPredicates, 11 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: A * 4 + r * 4 + v * v + 2 * u == 2 * v + u * u - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-15 11:19:11,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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