./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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-scaling/fermat2-ll_valuebound1.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 1c7b0bcafcf64cbd4ebc44cac2f19b9f80df1308 ............................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 06:13:41,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:13:41,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:13:41,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:13:41,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:13:41,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:13:41,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:13:41,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:13:41,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:13:41,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:13:41,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:13:41,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:13:41,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:13:41,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:13:41,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:13:41,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:13:41,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:13:41,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:13:41,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:13:41,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:13:41,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:13:41,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:13:41,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:13:41,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:13:41,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:13:41,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:13:41,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:13:41,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:13:41,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:13:41,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:13:41,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:13:41,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:13:41,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:13:41,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:13:41,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:13:41,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:13:41,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:13:41,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:13:41,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:13:41,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:13:41,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:13:41,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:13:41,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:13:41,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:13:41,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:13:41,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:13:41,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:13:41,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:13:41,894 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:13:41,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:13:41,894 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:13:41,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:13:41,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:13:41,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:13:41,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:13:41,895 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:13:41,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:13:41,895 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:13:41,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:13:41,896 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:13:41,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:13:41,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:13:41,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:13:41,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:13:41,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:13:41,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:13:41,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:13:41,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:13:41,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:13:41,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:13:41,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:13:41,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:13:41,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c7b0bcafcf64cbd4ebc44cac2f19b9f80df1308 [2021-08-26 06:13:42,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:13:42,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:13:42,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:13:42,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:13:42,192 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:13:42,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2021-08-26 06:13:42,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71e69f33/0a3f2fbf322e4615b71a8387c00cf65f/FLAGac6ea3586 [2021-08-26 06:13:42,713 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:13:42,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2021-08-26 06:13:42,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71e69f33/0a3f2fbf322e4615b71a8387c00cf65f/FLAGac6ea3586 [2021-08-26 06:13:42,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c71e69f33/0a3f2fbf322e4615b71a8387c00cf65f [2021-08-26 06:13:42,742 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:13:42,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:13:42,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:13:42,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:13:42,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:13:42,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:42,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2041675b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42, skipping insertion in model container [2021-08-26 06:13:42,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:42,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:13:42,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:13:42,907 WARN L228 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-scaling/fermat2-ll_valuebound1.c[524,537] [2021-08-26 06:13:42,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:13:42,926 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:13:42,936 WARN L228 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-scaling/fermat2-ll_valuebound1.c[524,537] [2021-08-26 06:13:42,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:13:42,952 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:13:42,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42 WrapperNode [2021-08-26 06:13:42,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:13:42,954 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:13:42,954 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:13:42,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:13:42,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:42,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:42,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:13:42,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:13:42,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:13:42,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:13:43,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:13:43,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:13:43,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:13:43,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:13:43,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (1/1) ... [2021-08-26 06:13:43,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:13:43,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:13:43,066 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) [2021-08-26 06:13:43,095 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 [2021-08-26 06:13:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:13:43,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:13:43,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:13:43,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:13:43,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:13:43,389 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-08-26 06:13:43,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:13:43 BoogieIcfgContainer [2021-08-26 06:13:43,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:13:43,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:13:43,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:13:43,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:13:43,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:13:42" (1/3) ... [2021-08-26 06:13:43,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c76857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:13:43, skipping insertion in model container [2021-08-26 06:13:43,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:13:42" (2/3) ... [2021-08-26 06:13:43,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61c76857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:13:43, skipping insertion in model container [2021-08-26 06:13:43,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:13:43" (3/3) ... [2021-08-26 06:13:43,419 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.c [2021-08-26 06:13:43,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:13:43,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 06:13:43,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:13:43,482 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-26 06:13:43,483 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 06:13:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 23 states have internal predecessors, (33), 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) [2021-08-26 06:13:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 06:13:43,504 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:13:43,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:13:43,505 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:13:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:13:43,511 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-08-26 06:13:43,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:13:43,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639744825] [2021-08-26 06:13:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:13:43,520 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:13:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:13:43,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:13:43,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:13:43,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639744825] [2021-08-26 06:13:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639744825] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:13:43,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:13:43,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:13:43,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731679199] [2021-08-26 06:13:43,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:13:43,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:13:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:13:43,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:13:43,697 INFO L87 Difference]: Start difference. First operand has 24 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 23 states have internal predecessors, (33), 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-08-26 06:13:43,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:13:43,710 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2021-08-26 06:13:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:13:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) Word has length 13 [2021-08-26 06:13:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:13:43,717 INFO L225 Difference]: With dead ends: 45 [2021-08-26 06:13:43,718 INFO L226 Difference]: Without dead ends: 20 [2021-08-26 06:13:43,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:13:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-26 06:13:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-08-26 06:13:43,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-08-26 06:13:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-08-26 06:13:43,751 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-08-26 06:13:43,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:13:43,752 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-08-26 06:13:43,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-08-26 06:13:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-08-26 06:13:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 06:13:43,753 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:13:43,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:13:43,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:13:43,754 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:13:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:13:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-08-26 06:13:43,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:13:43,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21224351] [2021-08-26 06:13:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:13:43,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:13:43,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:13:43,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010333924] [2021-08-26 06:13:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:13:43,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:13:43,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:13:43,793 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) [2021-08-26 06:13:43,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 06:13:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:13:43,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-26 06:13:43,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:13:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:13:44,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:13:44,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21224351] [2021-08-26 06:13:44,850 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:13:44,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010333924] [2021-08-26 06:13:44,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010333924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:13:44,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:13:44,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-26 06:13:44,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078581297] [2021-08-26 06:13:44,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 06:13:44,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:13:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 06:13:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-26 06:13:44,863 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-08-26 06:13:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:13:56,882 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-08-26 06:13:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 06:13:56,883 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) Word has length 13 [2021-08-26 06:13:56,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:13:56,883 INFO L225 Difference]: With dead ends: 25 [2021-08-26 06:13:56,883 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 06:13:56,884 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 743.5ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-26 06:13:56,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 06:13:56,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 06:13:56,885 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) [2021-08-26 06:13:56,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 06:13:56,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-08-26 06:13:56,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:13:56,885 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 06:13:56,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2021-08-26 06:13:56,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 06:13:56,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 06:13:56,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:13:56,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:13:56,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:13:57,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:13:57,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 06:13:57,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:13:57,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:13:57,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:13:57,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:13:57,171 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2021-08-26 06:13:57,172 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 06:13:57,172 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 06:13:57,172 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 06:13:57,172 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 06:13:57,172 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-08-26 06:13:57,172 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L853 garLoopResultBuilder]: At program point L12-2(line 37) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) .cse0) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ ULTIMATE.start_main_~A~0 (* 2 ULTIMATE.start_main_~R~0))) (< (+ 1 .cse0) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (<= ULTIMATE.start_main_~A~0 1)))) [2021-08-26 06:13:57,173 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L860 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2021-08-26 06:13:57,173 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L857 garLoopResultBuilder]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 06:13:57,173 INFO L860 garLoopResultBuilder]: At program point L50(lines 19 51) the Hoare annotation is: true [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L9-6(line 9) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2021-08-26 06:13:57,174 INFO L853 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) .cse0) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1) (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ ULTIMATE.start_main_~A~0 (* 2 ULTIMATE.start_main_~R~0))) (< (+ 1 .cse0) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (<= ULTIMATE.start_main_~A~0 1)))) [2021-08-26 06:13:57,177 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:13:57,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:13:57 BoogieIcfgContainer [2021-08-26 06:13:57,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:13:57,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:13:57,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:13:57,204 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:13:57,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:13:43" (3/4) ... [2021-08-26 06:13:57,207 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 06:13:57,215 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-26 06:13:57,215 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 06:13:57,215 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:13:57,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:13:57,249 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:13:57,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:13:57,253 INFO L168 Benchmark]: Toolchain (without parser) took 14507.42 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 29.7 MB in the beginning and 29.2 MB in the end (delta: 536.2 kB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:13:57,253 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:13:57,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.67 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 33.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:13:57,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.50 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.5 MB in the beginning and 46.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 06:13:57,256 INFO L168 Benchmark]: Boogie Preprocessor took 34.23 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 45.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:13:57,256 INFO L168 Benchmark]: RCFGBuilder took 359.51 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 31.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:13:57,257 INFO L168 Benchmark]: TraceAbstraction took 13789.97 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 45.9 MB in the beginning and 32.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:13:57,257 INFO L168 Benchmark]: Witness Printer took 47.45 ms. Allocated memory is still 75.5 MB. Free memory was 32.3 MB in the beginning and 29.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:13:57,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 34.9 MB in the beginning and 34.9 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 206.67 ms. Allocated memory is still 52.4 MB. Free memory was 29.5 MB in the beginning and 33.5 MB in the end (delta: -4.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.50 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.5 MB in the beginning and 46.4 MB in the end (delta: -12.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.23 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 45.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.51 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 31.1 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13789.97 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 45.9 MB in the beginning and 32.3 MB in the end (delta: 13.6 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. * Witness Printer took 47.45 ms. Allocated memory is still 75.5 MB. Free memory was 32.3 MB in the beginning and 29.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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 - 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 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13706.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.2ms, AutomataDifference: 12067.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 73.9ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 34 SDslu, 7 SDs, 0 SdLazy, 33 SolverSat, 16 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 11497.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 743.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 157 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 23.1ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 45.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 26.5ms SsaConstructionTime, 73.8ms SatisfiabilityAnalysisTime, 1005.8ms InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 239 SizeOfPredicates, 12 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((cond == 1 && A + r == (u * -1 + 1) / -2 * ((u * -1 + 1) / -2)) && (u + 1) % -2 == 0) && v == 1) && 1 <= cond) && R * R + 1 < A + 2 * R) && 1 + (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) < A + 2 * ((u * -1 + 1) / -2)) && A <= 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((cond == 1 && A + r == (u * -1 + 1) / -2 * ((u * -1 + 1) / -2)) && (u + 1) % -2 == 0) && v == 1) && R * R + 1 < A + 2 * R) && 1 + (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) < A + 2 * ((u * -1 + 1) / -2)) && A <= 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-26 06:13:57,307 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...