./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be --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 d32da3d6d63cd0b5044f81aaa321c86b8663ab47e67a0d6b64aca0030551d2e0 ................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:16:13,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:16:13,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:16:13,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:16:13,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:16:13,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:16:13,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:16:13,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:16:13,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:16:13,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:16:13,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:16:13,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:16:13,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:16:13,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:16:13,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:16:13,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:16:13,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:16:13,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:16:13,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:16:13,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:16:13,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:16:13,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:16:13,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:16:13,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:16:13,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:16:13,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:16:13,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:16:13,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:16:13,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:16:13,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:16:13,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:16:13,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:16:13,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:16:13,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:16:13,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:16:13,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:16:13,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:16:13,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:16:13,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:16:13,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:16:13,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:16:13,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:16:13,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:16:13,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:16:13,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:16:13,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:16:13,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:16:13,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:16:13,967 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:16:13,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:16:13,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:16:13,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:16:13,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:16:13,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:16:13,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:16:13,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:16:13,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:16:13,970 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:16:13,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:16:13,970 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:16:13,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:16:13,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:16:13,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:16:13,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:16:13,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:16:13,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:16:13,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:16:13,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:16:13,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:16:13,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:16:13,974 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:16:13,974 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:16:13,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:16:13,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:16:13,975 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_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d32da3d6d63cd0b5044f81aaa321c86b8663ab47e67a0d6b64aca0030551d2e0 [2021-10-21 19:16:14,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:16:14,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:16:14,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:16:14,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:16:14,352 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:16:14,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c [2021-10-21 19:16:14,440 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/data/8063e19de/ca78425cc412490baa741b96f21f3709/FLAG35d3a2975 [2021-10-21 19:16:14,967 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:16:14,968 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c [2021-10-21 19:16:14,977 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/data/8063e19de/ca78425cc412490baa741b96f21f3709/FLAG35d3a2975 [2021-10-21 19:16:15,309 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/data/8063e19de/ca78425cc412490baa741b96f21f3709 [2021-10-21 19:16:15,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:16:15,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:16:15,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:16:15,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:16:15,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:16:15,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465d661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15, skipping insertion in model container [2021-10-21 19:16:15,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:16:15,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:16:15,539 WARN L228 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_6e495059-eb5e-444a-8922-44749cac243f/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c[524,537] [2021-10-21 19:16:15,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:16:15,568 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:16:15,583 WARN L228 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_6e495059-eb5e-444a-8922-44749cac243f/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound50.c[524,537] [2021-10-21 19:16:15,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:16:15,613 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:16:15,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15 WrapperNode [2021-10-21 19:16:15,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:16:15,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:16:15,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:16:15,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:16:15,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:16:15,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:16:15,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:16:15,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:16:15,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:16:15,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:16:15,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:16:15,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:16:15,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (1/1) ... [2021-10-21 19:16:15,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:16:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:15,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:16:15,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:16:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:16:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:16:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:16:15,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:16:16,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:16:16,066 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-21 19:16:16,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:16:16 BoogieIcfgContainer [2021-10-21 19:16:16,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:16:16,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:16:16,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:16:16,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:16:16,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:16:15" (1/3) ... [2021-10-21 19:16:16,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d87b6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:16:16, skipping insertion in model container [2021-10-21 19:16:16,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:16:15" (2/3) ... [2021-10-21 19:16:16,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d87b6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:16:16, skipping insertion in model container [2021-10-21 19:16:16,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:16:16" (3/3) ... [2021-10-21 19:16:16,095 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound50.c [2021-10-21 19:16:16,101 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:16:16,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 19:16:16,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:16:16,242 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:16:16,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-21 19:16:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:16:16,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:16,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:16,271 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:16,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:16,278 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-10-21 19:16:16,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:16,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366402635] [2021-10-21 19:16:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:16,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:16,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:16,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366402635] [2021-10-21 19:16:16,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366402635] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:16,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:16,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:16:16,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055020419] [2021-10-21 19:16:16,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:16:16,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:16,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:16:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:16:16,540 INFO L87 Difference]: Start difference. First operand has 24 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:16,562 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2021-10-21 19:16:16,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:16:16,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 19:16:16,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:16,575 INFO L225 Difference]: With dead ends: 45 [2021-10-21 19:16:16,576 INFO L226 Difference]: Without dead ends: 20 [2021-10-21 19:16:16,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:16:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-21 19:16:16,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-21 19:16:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-21 19:16:16,642 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2021-10-21 19:16:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:16,644 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-21 19:16:16,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-21 19:16:16,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:16:16,646 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:16,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:16,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:16:16,648 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:16,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:16,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-10-21 19:16:16,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:16,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089874232] [2021-10-21 19:16:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:16,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:16,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:16:16,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899351974] [2021-10-21 19:16:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:16,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:16,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:16,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:16,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:16:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:16,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:16:16,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:17,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:17,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089874232] [2021-10-21 19:16:17,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:16:17,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899351974] [2021-10-21 19:16:17,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899351974] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:17,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:17,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:16:17,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034301060] [2021-10-21 19:16:17,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:16:17,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:17,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:16:17,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:16:17,126 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:19,269 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-21 19:16:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:16:19,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 19:16:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:19,271 INFO L225 Difference]: With dead ends: 31 [2021-10-21 19:16:19,271 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 19:16:19,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:16:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 19:16:19,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2021-10-21 19:16:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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) [2021-10-21 19:16:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-21 19:16:19,280 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 13 [2021-10-21 19:16:19,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:19,280 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-21 19:16:19,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:16:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-21 19:16:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:16:19,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:16:19,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:16:19,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 19:16:19,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:19,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:16:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:16:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2131930913, now seen corresponding path program 1 times [2021-10-21 19:16:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:16:19,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369592740] [2021-10-21 19:16:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:19,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:16:19,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:16:19,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815231565] [2021-10-21 19:16:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:16:19,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:16:19,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:16:19,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:16:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:16:19,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:16:19,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:16:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:16:19,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:16:19,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369592740] [2021-10-21 19:16:19,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:16:19,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815231565] [2021-10-21 19:16:19,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815231565] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:16:19,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:16:19,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:16:19,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993886403] [2021-10-21 19:16:19,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:16:19,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:16:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:16:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:16:19,900 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-21 19:16:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:16:20,041 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-21 19:16:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:16:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-21 19:16:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:16:20,043 INFO L225 Difference]: With dead ends: 22 [2021-10-21 19:16:20,043 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:16:20,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:16:20,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:16:20,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:16:20,045 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) [2021-10-21 19:16:20,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:16:20,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-21 19:16:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:16:20,045 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:16:20,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-21 19:16:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:16:20,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:16:20,057 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:16:20,057 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:16:20,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:16:20,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:16:20,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:16:20,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:20,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:20,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:20,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:16:25,016 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2021-10-21 19:16:25,016 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:16:25,017 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:16:25,017 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:16:25,017 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:16:25,017 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:16:25,017 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:16:25,018 INFO L853 garLoopResultBuilder]: At program point L12-2(line 37) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-10-21 19:16:25,018 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:16:25,018 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-21 19:16:25,018 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-21 19:16:25,018 INFO L860 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2021-10-21 19:16:25,019 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-21 19:16:25,019 INFO L857 garLoopResultBuilder]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2021-10-21 19:16:25,019 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:16:25,019 INFO L860 garLoopResultBuilder]: At program point L50(lines 19 51) the Hoare annotation is: true [2021-10-21 19:16:25,019 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:16:25,020 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:16:25,020 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-21 19:16:25,020 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-21 19:16:25,021 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-21 19:16:25,021 INFO L857 garLoopResultBuilder]: For program point L9-6(line 9) no Hoare annotation was computed. [2021-10-21 19:16:25,021 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2021-10-21 19:16:25,021 INFO L853 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0))))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1) .cse0))) [2021-10-21 19:16:25,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:16:25,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:16:25 BoogieIcfgContainer [2021-10-21 19:16:25,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:16:25,043 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:16:25,043 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:16:25,044 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:16:25,044 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:16:16" (3/4) ... [2021-10-21 19:16:25,048 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:16:25,060 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-10-21 19:16:25,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:16:25,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:16:25,061 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:16:25,113 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:16:25,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:16:25,115 INFO L168 Benchmark]: Toolchain (without parser) took 9799.79 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 58.0 MB in the beginning and 91.8 MB in the end (delta: -33.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:16:25,115 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 62.5 MB in the beginning and 62.4 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:16:25,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.21 ms. Allocated memory is still 92.3 MB. Free memory was 57.9 MB in the beginning and 68.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:25,117 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.92 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 66.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:25,117 INFO L168 Benchmark]: Boogie Preprocessor took 25.84 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 65.4 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:25,118 INFO L168 Benchmark]: RCFGBuilder took 385.15 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 55.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:25,119 INFO L168 Benchmark]: TraceAbstraction took 8971.25 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 54.5 MB in the beginning and 94.9 MB in the end (delta: -40.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:25,119 INFO L168 Benchmark]: Witness Printer took 70.05 ms. Allocated memory is still 121.6 MB. Free memory was 94.9 MB in the beginning and 91.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:16:25,122 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 62.5 MB in the beginning and 62.4 MB in the end (delta: 30.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.21 ms. Allocated memory is still 92.3 MB. Free memory was 57.9 MB in the beginning and 68.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.92 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 66.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.84 ms. Allocated memory is still 92.3 MB. Free memory was 66.4 MB in the beginning and 65.4 MB in the end (delta: 980.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.15 ms. Allocated memory is still 92.3 MB. Free memory was 65.4 MB in the beginning and 55.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8971.25 ms. Allocated memory was 92.3 MB in the beginning and 121.6 MB in the end (delta: 29.4 MB). Free memory was 54.5 MB in the beginning and 94.9 MB in the end (delta: -40.4 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * Witness Printer took 70.05 ms. Allocated memory is still 121.6 MB. Free memory was 94.9 MB in the beginning and 91.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 8795.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 14.0ms, AutomataDifference: 2362.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 4757.1ms, InitialAbstractionConstructionTime: 15.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 50 SDtfs, 18 SDslu, 55 SDs, 0 SdLazy, 45 SolverSat, 15 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2150.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 155.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 85 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 35.0ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 4715.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.5ms SsaConstructionTime, 99.6ms SatisfiabilityAnalysisTime, 686.9ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 13 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v) || (((u + 1) % -2 == 0 && v == 1) && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:16:25,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e495059-eb5e-444a-8922-44749cac243f/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...