./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer --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 0.2.0-a4ecdab [2020-11-28 02:58:42,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:42,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:42,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:42,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:42,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:42,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:42,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:42,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:42,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:42,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:42,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:42,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:42,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:42,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:42,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:42,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:42,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:42,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:42,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:42,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:42,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:42,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:42,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:42,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:42,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:42,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:42,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:42,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:42,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:42,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:42,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:42,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:42,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:42,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:42,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:42,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:42,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:42,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:42,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:42,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:42,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:43,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:43,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:43,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:43,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:43,012 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:43,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:43,013 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:43,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:43,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:43,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:43,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:43,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:43,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:43,015 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:43,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:43,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:43,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:43,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:43,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:43,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:43,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:43,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:43,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:43,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:43,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:43,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:43,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:43,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:43,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:43,019 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:/tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c7b0bcafcf64cbd4ebc44cac2f19b9f80df1308 [2020-11-28 02:58:43,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:43,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:43,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:43,296 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:43,297 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:43,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2020-11-28 02:58:43,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/data/8a1e5d82b/2e906d313be54fc790df7c55e2fd5ddc/FLAG66122972d [2020-11-28 02:58:43,789 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:43,789 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2020-11-28 02:58:43,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/data/8a1e5d82b/2e906d313be54fc790df7c55e2fd5ddc/FLAG66122972d [2020-11-28 02:58:44,205 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/data/8a1e5d82b/2e906d313be54fc790df7c55e2fd5ddc [2020-11-28 02:58:44,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:44,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:44,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:44,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:44,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:44,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a015bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44, skipping insertion in model container [2020-11-28 02:58:44,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:44,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:44,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:44,447 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:44,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:44,515 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:44,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44 WrapperNode [2020-11-28 02:58:44,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:44,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:44,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:44,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:44,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:44,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:44,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:44,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:44,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... [2020-11-28 02:58:44,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:44,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:44,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:44,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:44,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:45,037 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:45,038 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-28 02:58:45,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:45 BoogieIcfgContainer [2020-11-28 02:58:45,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:45,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:45,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:45,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:45,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:44" (1/3) ... [2020-11-28 02:58:45,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eac9230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:45, skipping insertion in model container [2020-11-28 02:58:45,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:44" (2/3) ... [2020-11-28 02:58:45,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eac9230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:45, skipping insertion in model container [2020-11-28 02:58:45,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:45" (3/3) ... [2020-11-28 02:58:45,059 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.c [2020-11-28 02:58:45,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:45,074 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:58:45,086 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:58:45,109 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:45,109 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:45,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:45,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:45,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:45,110 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:45,110 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:45,110 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:45,124 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 02:58:45,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:58:45,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:45,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:45,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:45,136 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-28 02:58:45,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:45,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490820883] [2020-11-28 02:58:45,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:45,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490820883] [2020-11-28 02:58:45,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:45,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:45,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418525748] [2020-11-28 02:58:45,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:45,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:45,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:45,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:45,294 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-28 02:58:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:45,308 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2020-11-28 02:58:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:45,309 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 02:58:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:45,318 INFO L225 Difference]: With dead ends: 45 [2020-11-28 02:58:45,318 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 02:58:45,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:45,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 02:58:45,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 02:58:45,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 02:58:45,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-28 02:58:45,353 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-11-28 02:58:45,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:45,354 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-28 02:58:45,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:45,354 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-28 02:58:45,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 02:58:45,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:45,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:45,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:45,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:45,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-28 02:58:45,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:45,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498622213] [2020-11-28 02:58:45,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:45,378 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:58:45,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [39367593] [2020-11-28 02:58:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:58:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:45,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-28 02:58:45,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:58:45,663 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:45,663 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:45,719 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:58:45,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:45,794 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 02:58:45,794 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:45,984 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:58:46,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:58:46,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498622213] [2020-11-28 02:58:46,065 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:58:46,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39367593] [2020-11-28 02:58:46,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:46,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-28 02:58:46,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666507801] [2020-11-28 02:58:46,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 02:58:46,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 02:58:46,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:58:46,070 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-11-28 02:58:46,438 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2020-11-28 02:58:46,571 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 35 [2020-11-28 02:58:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:46,633 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-28 02:58:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 02:58:46,634 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-28 02:58:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:46,634 INFO L225 Difference]: With dead ends: 25 [2020-11-28 02:58:46,634 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:58:46,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-28 02:58:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:58:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:58:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:58:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:58:46,636 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 02:58:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:46,637 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:58:46,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 02:58:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:58:46,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:58:46,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:58:46,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:58:46,944 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2020-11-28 02:58:46,944 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:58:46,944 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:58:46,944 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:58:46,944 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:58:46,945 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:58:46,945 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:58:46,945 INFO L270 CegarLoopResult]: At program point L12-1(line 37) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-28 02:58:46,945 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:58:46,945 INFO L277 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: true [2020-11-28 02:58:46,945 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L277 CegarLoopResult]: At program point L50(lines 19 51) the Hoare annotation is: true [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-11-28 02:58:46,946 INFO L274 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-11-28 02:58:46,947 INFO L274 CegarLoopResult]: For program point L9-6(line 9) no Hoare annotation was computed. [2020-11-28 02:58:46,947 INFO L274 CegarLoopResult]: For program point L39(lines 39 45) no Hoare annotation was computed. [2020-11-28 02:58:46,947 INFO L270 CegarLoopResult]: 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 (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-28 02:58:46,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:46 BoogieIcfgContainer [2020-11-28 02:58:46,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:46,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:46,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:46,987 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:46,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:45" (3/4) ... [2020-11-28 02:58:46,992 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:58:47,004 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 02:58:47,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:58:47,005 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:47,006 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:58:47,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08a908d3-d874-40b4-be50-683cf65923c4/bin/uautomizer/witness.graphml [2020-11-28 02:58:47,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:47,065 INFO L168 Benchmark]: Toolchain (without parser) took 2855.52 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.6 MB in the beginning and 70.2 MB in the end (delta: -12.6 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:47,066 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:47,067 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.60 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 68.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:47,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.08 ms. Allocated memory is still 90.2 MB. Free memory was 68.1 MB in the beginning and 66.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:47,068 INFO L168 Benchmark]: Boogie Preprocessor took 58.73 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:47,069 INFO L168 Benchmark]: RCFGBuilder took 409.74 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 51.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:47,070 INFO L168 Benchmark]: TraceAbstraction took 1932.46 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 73.8 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:47,070 INFO L168 Benchmark]: Witness Printer took 78.55 ms. Allocated memory is still 109.1 MB. Free memory was 73.8 MB in the beginning and 70.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:47,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 60.9 MB in the beginning and 60.9 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.60 ms. Allocated memory is still 90.2 MB. Free memory was 57.6 MB in the beginning and 68.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.08 ms. Allocated memory is still 90.2 MB. Free memory was 68.1 MB in the beginning and 66.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.73 ms. Allocated memory is still 90.2 MB. Free memory was 66.5 MB in the beginning and 65.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.74 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 51.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1932.46 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.5 MB in the beginning and 73.8 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 78.55 ms. Allocated memory is still 109.1 MB. Free memory was 73.8 MB in the beginning and 70.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && R * R + 1 < 2 * R + A) && cond == 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && R * R + 1 < 2 * R + A) && 1 <= cond) && cond == 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 29 SDslu, 7 SDs, 0 SdLazy, 39 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 157 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2868 SizeOfPredicates, 13 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...