./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 29123ed479a06938c1b58bc0ee2ae38219e9e012922d3ca9fba5679eb1736558 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:06:02,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:06:02,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:06:02,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:06:02,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:06:02,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:06:02,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:06:02,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:06:02,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:06:02,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:06:02,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:06:02,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:06:02,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:06:02,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:06:02,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:06:02,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:06:02,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:06:02,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:06:02,940 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:06:02,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:06:02,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:06:02,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:06:02,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:06:02,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:06:02,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:06:02,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:06:02,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:06:02,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:06:02,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:06:02,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:06:02,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:06:02,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:06:02,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:06:02,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:06:02,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:06:02,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:06:02,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:06:02,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:06:02,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:06:02,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:06:02,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:06:02,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:06:03,029 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:06:03,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:06:03,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:06:03,031 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:06:03,038 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:06:03,038 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:06:03,039 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:06:03,039 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:06:03,039 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:06:03,039 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:06:03,040 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:06:03,041 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:06:03,041 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:06:03,041 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:06:03,042 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:06:03,042 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:06:03,042 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:06:03,042 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:06:03,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:06:03,044 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:06:03,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:06:03,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:06:03,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:06:03,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:06:03,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:06:03,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:06:03,047 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:06:03,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:06:03,047 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:06:03,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:06:03,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:06:03,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:06:03,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:06:03,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:06:03,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:06:03,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:06:03,050 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:06:03,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:06:03,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:06:03,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:06:03,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:06:03,051 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29123ed479a06938c1b58bc0ee2ae38219e9e012922d3ca9fba5679eb1736558 [2021-11-23 02:06:03,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:06:03,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:06:03,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:06:03,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:06:03,356 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:06:03,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-11-23 02:06:03,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/data/b736d0530/d4005eb7d098453090e6d37faed3ba19/FLAG376ca6a0a [2021-11-23 02:06:03,892 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:06:03,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c [2021-11-23 02:06:03,909 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/data/b736d0530/d4005eb7d098453090e6d37faed3ba19/FLAG376ca6a0a [2021-11-23 02:06:04,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/data/b736d0530/d4005eb7d098453090e6d37faed3ba19 [2021-11-23 02:06:04,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:06:04,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:06:04,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:06:04,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:06:04,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:06:04,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e2343c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04, skipping insertion in model container [2021-11-23 02:06:04,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:06:04,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:06:04,479 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2021-11-23 02:06:04,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:06:04,508 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:06:04,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound2.c[535,548] [2021-11-23 02:06:04,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:06:04,543 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:06:04,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04 WrapperNode [2021-11-23 02:06:04,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:06:04,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:06:04,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:06:04,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:06:04,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,580 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-11-23 02:06:04,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:06:04,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:06:04,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:06:04,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:06:04,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:06:04,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:06:04,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:06:04,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:06:04,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (1/1) ... [2021-11-23 02:06:04,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:06:04,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:04,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:06:04,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:06:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:06:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:06:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:06:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:06:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:06:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:06:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:06:04,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:06:04,760 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:06:04,761 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:06:04,922 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:06:04,944 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:06:04,944 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 02:06:04,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:04 BoogieIcfgContainer [2021-11-23 02:06:04,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:06:04,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:06:04,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:06:04,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:06:04,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:04" (1/3) ... [2021-11-23 02:06:04,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0ae66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:04, skipping insertion in model container [2021-11-23 02:06:04,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:04" (2/3) ... [2021-11-23 02:06:04,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0ae66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:04, skipping insertion in model container [2021-11-23 02:06:04,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:04" (3/3) ... [2021-11-23 02:06:04,958 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound2.c [2021-11-23 02:06:04,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:06:04,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:06:05,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:06:05,027 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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 [2021-11-23 02:06:05,027 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:06:05,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 02:06:05,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:06:05,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:06:05,054 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:06:05,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:06:05,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:06:05,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1333631252, now seen corresponding path program 1 times [2021-11-23 02:06:05,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:06:05,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132731384] [2021-11-23 02:06:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:05,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:06:05,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:06:05,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [505078606] [2021-11-23 02:06:05,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:06:05,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:06:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:06:05,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:06:05,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:06:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:06:05,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 02:06:05,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:06:14,647 WARN L227 SmtUtils]: Spent 8.81s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:06:23,400 WARN L227 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:32,310 WARN L227 SmtUtils]: Spent 8.86s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 02:06:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 02:06:32,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:06:32,857 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:06:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132731384] [2021-11-23 02:06:32,858 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:06:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505078606] [2021-11-23 02:06:32,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505078606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:06:32,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:06:32,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 02:06:32,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695487522] [2021-11-23 02:06:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:06:32,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:06:32,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:06:32,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:06:32,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:06:32,934 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:06:37,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 02:06:55,155 WARN L227 SmtUtils]: Spent 17.29s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:06:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:06:55,221 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2021-11-23 02:06:55,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:06:55,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2021-11-23 02:06:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:06:55,230 INFO L225 Difference]: With dead ends: 37 [2021-11-23 02:06:55,231 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:06:55,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 02:06:55,239 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:06:55,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 69 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2021-11-23 02:06:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:06:55,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:06:55,268 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) [2021-11-23 02:06:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:06:55,270 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-11-23 02:06:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:06:55,271 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:06:55,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:06:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:06:55,272 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:06:55,274 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:06:55,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:06:55,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:06:55,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:07:12,875 WARN L227 SmtUtils]: Spent 17.37s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 02:07:21,525 WARN L227 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 02:07:38,277 WARN L227 SmtUtils]: Spent 16.75s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 02:07:55,439 WARN L227 SmtUtils]: Spent 17.16s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 02:07:55,441 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0) (<= 0 |ULTIMATE.start_main_~A~0#1|)))) [2021-11-23 02:07:55,442 INFO L861 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2021-11-23 02:07:55,442 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-23 02:07:55,442 INFO L858 garLoopResultBuilder]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-11-23 02:07:55,442 INFO L854 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0) (<= 0 |ULTIMATE.start_main_~A~0#1|)))) [2021-11-23 02:07:55,442 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: false [2021-11-23 02:07:55,442 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0) (<= 0 |ULTIMATE.start_main_~A~0#1|)))) [2021-11-23 02:07:55,443 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-11-23 02:07:55,443 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:07:55,443 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-11-23 02:07:55,443 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (let ((.cse0 (* .cse1 .cse1))) (and (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= (mod |ULTIMATE.start_main_~A~0#1| 2) 1) (< (+ .cse0 1) (+ (* 2 .cse1) |ULTIMATE.start_main_~A~0#1|)) (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (= |ULTIMATE.start_main_~v~0#1| 1) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse0) (<= 0 |ULTIMATE.start_main_~A~0#1|)))) [2021-11-23 02:07:55,443 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: false [2021-11-23 02:07:55,444 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-11-23 02:07:55,444 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2021-11-23 02:07:55,444 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-11-23 02:07:55,444 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:07:55,445 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~A~0#1| 2) (<= 0 |ULTIMATE.start_main_~A~0#1|)) [2021-11-23 02:07:55,445 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 2) (<= |ULTIMATE.start_main_~A~0#1| 2) (<= 0 |ULTIMATE.start_main_~A~0#1|)) [2021-11-23 02:07:55,445 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) (<= |ULTIMATE.start_main_~A~0#1| 2)) [2021-11-23 02:07:55,445 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-23 02:07:55,446 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-23 02:07:55,446 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-23 02:07:55,446 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-23 02:07:55,446 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-23 02:07:55,447 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-23 02:07:55,447 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-23 02:07:55,447 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-23 02:07:55,449 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-23 02:07:55,451 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:07:55,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:07:55 BoogieIcfgContainer [2021-11-23 02:07:55,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:07:55,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:07:55,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:07:55,468 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:07:55,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:04" (3/4) ... [2021-11-23 02:07:55,472 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:07:55,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-23 02:07:55,478 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 02:07:55,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-23 02:07:55,482 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 02:07:55,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 02:07:55,483 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:07:55,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:07:55,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:07:55,524 INFO L158 Benchmark]: Toolchain (without parser) took 111238.57ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 49.6MB in the beginning and 49.1MB in the end (delta: 517.4kB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-11-23 02:07:55,525 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:07:55,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.87ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 49.4MB in the beginning and 83.6MB in the end (delta: -34.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:07:55,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.75ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 82.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:07:55,526 INFO L158 Benchmark]: Boogie Preprocessor took 26.04ms. Allocated memory is still 113.2MB. Free memory was 82.5MB in the beginning and 81.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:07:55,527 INFO L158 Benchmark]: RCFGBuilder took 339.11ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 70.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:07:55,527 INFO L158 Benchmark]: TraceAbstraction took 110517.88ms. Allocated memory is still 113.2MB. Free memory was 69.5MB in the beginning and 52.1MB in the end (delta: 17.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-11-23 02:07:55,527 INFO L158 Benchmark]: Witness Printer took 55.72ms. Allocated memory is still 113.2MB. Free memory was 52.1MB in the beginning and 49.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 02:07:55,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.87ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 49.4MB in the beginning and 83.6MB in the end (delta: -34.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.75ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 82.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.04ms. Allocated memory is still 113.2MB. Free memory was 82.5MB in the beginning and 81.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.11ms. Allocated memory is still 113.2MB. Free memory was 81.0MB in the beginning and 70.0MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 110517.88ms. Allocated memory is still 113.2MB. Free memory was 69.5MB in the beginning and 52.1MB in the end (delta: 17.4MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 55.72ms. Allocated memory is still 113.2MB. Free memory was 52.1MB in the beginning and 49.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 110.4s, OverallIterations: 1, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 60.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 9 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 26.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 21 PreInvPairs, 25 NumberOfFragments, 325 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 59.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 27.6s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 6 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 12/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((u + 1) % 2 == 0 && A % 2 == 1) && (-1 + u) / 2 * ((-1 + u) / 2) + 1 < 2 * ((-1 + u) / 2) + A) && R * R + 1 < 2 * R + A) && v == 1) && A <= 2) && A + r == (-1 + u) / 2 * ((-1 + u) / 2)) && 0 <= A - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((((((u + 1) % 2 == 0 && A % 2 == 1) && (-1 + u) / 2 * ((-1 + u) / 2) + 1 < 2 * ((-1 + u) / 2) + A) && R * R + 1 < 2 * R + A) && v == 1) && A <= 2) && A + r == (-1 + u) / 2 * ((-1 + u) / 2)) && 0 <= A RESULT: Ultimate proved your program to be correct! [2021-11-23 02:07:55,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd7bf502-4ecc-48c9-a138-123d385736d6/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE