./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/fermat1-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 c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 11:03:27,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 11:03:27,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 11:03:27,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 11:03:27,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 11:03:27,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 11:03:27,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 11:03:27,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 11:03:27,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 11:03:27,862 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 11:03:27,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 11:03:27,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 11:03:27,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 11:03:27,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 11:03:27,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 11:03:27,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 11:03:27,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 11:03:27,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 11:03:27,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 11:03:27,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 11:03:27,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 11:03:27,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 11:03:27,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 11:03:27,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 11:03:27,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 11:03:27,889 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 11:03:27,889 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 11:03:27,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 11:03:27,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 11:03:27,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 11:03:27,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 11:03:27,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 11:03:27,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 11:03:27,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 11:03:27,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 11:03:27,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 11:03:27,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 11:03:27,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 11:03:27,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 11:03:27,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 11:03:27,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 11:03:27,903 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 11:03:27,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 11:03:27,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 11:03:27,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 11:03:27,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 11:03:27,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 11:03:27,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 11:03:27,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 11:03:27,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 11:03:27,941 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 11:03:27,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 11:03:27,942 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 11:03:27,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 11:03:27,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 11:03:27,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 11:03:27,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 11:03:27,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 11:03:27,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 11:03:27,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 11:03:27,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 11:03:27,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 11:03:27,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 11:03:27,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 11:03:27,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c [2021-12-17 11:03:28,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 11:03:28,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 11:03:28,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 11:03:28,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 11:03:28,165 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 11:03:28,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat1-ll.c [2021-12-17 11:03:28,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f02dd7a6/57c19c15c2fe41888710a7def86d1ebc/FLAG6a4e0d7bb [2021-12-17 11:03:28,513 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 11:03:28,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat1-ll.c [2021-12-17 11:03:28,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f02dd7a6/57c19c15c2fe41888710a7def86d1ebc/FLAG6a4e0d7bb [2021-12-17 11:03:28,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f02dd7a6/57c19c15c2fe41888710a7def86d1ebc [2021-12-17 11:03:28,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 11:03:28,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 11:03:28,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 11:03:28,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 11:03:28,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 11:03:28,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:03:28" (1/1) ... [2021-12-17 11:03:28,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbad91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:28, skipping insertion in model container [2021-12-17 11:03:28,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:03:28" (1/1) ... [2021-12-17 11:03:28,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 11:03:28,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 11:03:29,113 WARN L230 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/fermat1-ll.c[535,548] [2021-12-17 11:03:29,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 11:03:29,130 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 11:03:29,138 WARN L230 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/fermat1-ll.c[535,548] [2021-12-17 11:03:29,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 11:03:29,176 INFO L208 MainTranslator]: Completed translation [2021-12-17 11:03:29,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29 WrapperNode [2021-12-17 11:03:29,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 11:03:29,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 11:03:29,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 11:03:29,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 11:03:29,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,217 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-17 11:03:29,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 11:03:29,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 11:03:29,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 11:03:29,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 11:03:29,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 11:03:29,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 11:03:29,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 11:03:29,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 11:03:29,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (1/1) ... [2021-12-17 11:03:29,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 11:03:29,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 11:03:29,283 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) [2021-12-17 11:03:29,291 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 [2021-12-17 11:03:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 11:03:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 11:03:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 11:03:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 11:03:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 11:03:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 11:03:29,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 11:03:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 11:03:29,355 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 11:03:29,357 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 11:03:29,447 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 11:03:29,465 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 11:03:29,465 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-17 11:03:29,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:03:29 BoogieIcfgContainer [2021-12-17 11:03:29,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 11:03:29,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 11:03:29,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 11:03:29,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 11:03:29,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:03:28" (1/3) ... [2021-12-17 11:03:29,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510ff733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:03:29, skipping insertion in model container [2021-12-17 11:03:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:03:29" (2/3) ... [2021-12-17 11:03:29,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@510ff733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:03:29, skipping insertion in model container [2021-12-17 11:03:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:03:29" (3/3) ... [2021-12-17 11:03:29,472 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2021-12-17 11:03:29,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 11:03:29,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 11:03:29,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 11:03:29,536 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 11:03:29,537 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 11:03:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 11:03:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 11:03:29,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:03:29,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 11:03:29,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:03:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:03:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1029222232, now seen corresponding path program 1 times [2021-12-17 11:03:29,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 11:03:29,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236746862] [2021-12-17 11:03:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:03:29,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 11:03:29,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 11:03:29,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1256311781] [2021-12-17 11:03:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:03:29,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 11:03:29,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 11:03:29,640 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) [2021-12-17 11:03:29,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 11:03:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 11:03:29,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 11:03:29,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:03:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-17 11:03:29,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 11:03:29,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 11:03:29,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236746862] [2021-12-17 11:03:29,783 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 11:03:29,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256311781] [2021-12-17 11:03:29,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256311781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 11:03:29,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 11:03:29,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 11:03:29,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168881964] [2021-12-17 11:03:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 11:03:29,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 11:03:29,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 11:03:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 11:03:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 11:03:29,823 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2021-12-17 11:03:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:03:29,853 INFO L93 Difference]: Finished difference Result 55 states and 88 transitions. [2021-12-17 11:03:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 11:03:29,855 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 [2021-12-17 11:03:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:03:29,861 INFO L225 Difference]: With dead ends: 55 [2021-12-17 11:03:29,861 INFO L226 Difference]: Without dead ends: 25 [2021-12-17 11:03:29,864 INFO L932 BasicCegarLoop]: 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 [2021-12-17 11:03:29,868 INFO L933 BasicCegarLoop]: 35 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, 35 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 [2021-12-17 11:03:29,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 11:03:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-17 11:03:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-17 11:03:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 11:03:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-12-17 11:03:29,911 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2021-12-17 11:03:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:03:29,912 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-12-17 11:03:29,912 INFO L471 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) [2021-12-17 11:03:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-12-17 11:03:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 11:03:29,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:03:29,914 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 11:03:29,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 11:03:30,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-17 11:03:30,119 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:03:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:03:30,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1400171261, now seen corresponding path program 1 times [2021-12-17 11:03:30,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 11:03:30,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361072126] [2021-12-17 11:03:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:03:30,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 11:03:30,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 11:03:30,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597839658] [2021-12-17 11:03:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:03:30,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 11:03:30,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 11:03:30,129 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) [2021-12-17 11:03:30,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 11:03:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 11:03:30,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 11:03:30,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:03:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 11:03:30,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 11:03:30,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 11:03:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361072126] [2021-12-17 11:03:30,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 11:03:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597839658] [2021-12-17 11:03:30,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597839658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 11:03:30,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 11:03:30,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 11:03:30,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913642881] [2021-12-17 11:03:30,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 11:03:30,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 11:03:30,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 11:03:30,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 11:03:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 11:03:30,373 INFO L87 Difference]: Start difference. First operand 25 states and 31 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) [2021-12-17 11:03:32,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 11:03:34,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-17 11:03:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:03:34,258 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-12-17 11:03:34,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 11:03:34,258 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 [2021-12-17 11:03:34,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:03:34,259 INFO L225 Difference]: With dead ends: 41 [2021-12-17 11:03:34,259 INFO L226 Difference]: Without dead ends: 39 [2021-12-17 11:03:34,259 INFO L932 BasicCegarLoop]: 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 [2021-12-17 11:03:34,260 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-17 11:03:34,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 86 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-17 11:03:34,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-17 11:03:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-12-17 11:03:34,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 11:03:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-12-17 11:03:34,269 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 18 [2021-12-17 11:03:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:03:34,269 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-12-17 11:03:34,270 INFO L471 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) [2021-12-17 11:03:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2021-12-17 11:03:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 11:03:34,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 11:03:34,271 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 11:03:34,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 11:03:34,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-17 11:03:34,486 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 11:03:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 11:03:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 17992522, now seen corresponding path program 1 times [2021-12-17 11:03:34,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 11:03:34,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58078746] [2021-12-17 11:03:34,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:03:34,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 11:03:34,493 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 11:03:34,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1371292578] [2021-12-17 11:03:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 11:03:34,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 11:03:34,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 11:03:34,495 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) [2021-12-17 11:03:34,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 11:03:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 11:03:34,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 11:03:34,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 11:03:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 11:03:34,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 11:03:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 11:03:34,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 11:03:34,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58078746] [2021-12-17 11:03:34,820 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 11:03:34,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371292578] [2021-12-17 11:03:34,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371292578] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 11:03:34,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 11:03:34,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-12-17 11:03:34,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773412432] [2021-12-17 11:03:34,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 11:03:34,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 11:03:34,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 11:03:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 11:03:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-17 11:03:34,823 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 11:03:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 11:03:34,902 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2021-12-17 11:03:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 11:03:34,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-12-17 11:03:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 11:03:34,903 INFO L225 Difference]: With dead ends: 38 [2021-12-17 11:03:34,904 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 11:03:34,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-17 11:03:34,910 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 11:03:34,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 90 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 11:03:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 11:03:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 11:03:34,915 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) [2021-12-17 11:03:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 11:03:34,915 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-12-17 11:03:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 11:03:34,918 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 11:03:34,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 11:03:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 11:03:34,918 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 11:03:34,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 11:03:34,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 11:03:35,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 11:03:35,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 11:03:35,163 INFO L861 garLoopResultBuilder]: At program point L56(lines 19 57) the Hoare annotation is: true [2021-12-17 11:03:35,163 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 11:03:35,163 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 11:03:35,163 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 11:03:35,163 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2021-12-17 11:03:35,164 INFO L861 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2021-12-17 11:03:35,164 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 11:03:35,164 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 53) the Hoare annotation is: (let ((.cse0 (* 4 |ULTIMATE.start_main_~A~0#1|)) (.cse1 (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* 2 |ULTIMATE.start_main_~u~0#1|)) (.cse3 (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|)))) (and (= (+ .cse0 .cse1 (* 4 |ULTIMATE.start_main_~r~0#1|) .cse2) .cse3) (= (+ .cse0 .cse1 .cse2) .cse3))) [2021-12-17 11:03:35,164 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 33 53) no Hoare annotation was computed. [2021-12-17 11:03:35,164 INFO L854 garLoopResultBuilder]: At program point L46-2(lines 33 53) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 11:03:35,164 INFO L854 garLoopResultBuilder]: At program point L38-2(lines 38 44) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 11:03:35,164 INFO L854 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 11:03:35,165 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 33 53) no Hoare annotation was computed. [2021-12-17 11:03:35,165 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-12-17 11:03:35,165 INFO L858 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2021-12-17 11:03:35,165 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 11:03:35,165 INFO L858 garLoopResultBuilder]: For program point L47-1(lines 46 52) no Hoare annotation was computed. [2021-12-17 11:03:35,165 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (* 2 |ULTIMATE.start_main_~v~0#1|))) [2021-12-17 11:03:35,165 INFO L858 garLoopResultBuilder]: For program point L39-1(lines 38 44) no Hoare annotation was computed. [2021-12-17 11:03:35,165 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-12-17 11:03:35,166 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-12-17 11:03:35,166 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-12-17 11:03:35,167 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-12-17 11:03:35,169 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-17 11:03:35,170 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 11:03:35,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:03:35 BoogieIcfgContainer [2021-12-17 11:03:35,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 11:03:35,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 11:03:35,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 11:03:35,182 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 11:03:35,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:03:29" (3/4) ... [2021-12-17 11:03:35,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 11:03:35,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-17 11:03:35,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-17 11:03:35,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-17 11:03:35,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 11:03:35,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 11:03:35,191 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 11:03:35,211 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 11:03:35,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 11:03:35,212 INFO L158 Benchmark]: Toolchain (without parser) took 6241.88ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 60.3MB in the beginning and 64.5MB in the end (delta: -4.2MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-12-17 11:03:35,212 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 11:03:35,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.10ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 69.0MB in the end (delta: -8.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-12-17 11:03:35,212 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.90ms. Allocated memory is still 92.3MB. Free memory was 69.0MB in the beginning and 67.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 11:03:35,213 INFO L158 Benchmark]: Boogie Preprocessor took 15.60ms. Allocated memory is still 92.3MB. Free memory was 67.3MB in the beginning and 66.4MB in the end (delta: 902.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 11:03:35,213 INFO L158 Benchmark]: RCFGBuilder took 232.89ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 56.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 11:03:35,213 INFO L158 Benchmark]: TraceAbstraction took 5713.31ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.0MB in the beginning and 67.3MB in the end (delta: -11.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-12-17 11:03:35,213 INFO L158 Benchmark]: Witness Printer took 29.92ms. Allocated memory is still 111.1MB. Free memory was 67.3MB in the beginning and 64.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 11:03:35,215 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 92.3MB. Free memory is still 51.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.10ms. Allocated memory is still 92.3MB. Free memory was 60.2MB in the beginning and 69.0MB in the end (delta: -8.8MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.90ms. Allocated memory is still 92.3MB. Free memory was 69.0MB in the beginning and 67.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.60ms. Allocated memory is still 92.3MB. Free memory was 67.3MB in the beginning and 66.4MB in the end (delta: 902.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 232.89ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 56.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5713.31ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 56.0MB in the beginning and 67.3MB in the end (delta: -11.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * Witness Printer took 29.92ms. Allocated memory is still 111.1MB. Free memory was 67.3MB in the beginning and 64.5MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 211 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 76 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 23 PreInvPairs, 36 NumberOfFragments, 150 HoareAnnotationTreeSize, 23 FomulaSimplifications, 260 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 247 SizeOfPredicates, 9 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 20 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 4 * A + v * v + 4 * r + 2 * u == u * u + 2 * v - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 4 * A + v * v + 4 * r + 2 * u == u * u + 2 * v RESULT: Ultimate proved your program to be correct! [2021-12-17 11:03:35,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE