./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.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_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/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_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/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_094b9402-42f7-4a85-8e03-eab37d014abf/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 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 20:03:32,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:03:32,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:03:32,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:03:32,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:03:32,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:03:32,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:03:32,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:03:32,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:03:32,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:03:32,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:03:32,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:03:32,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:03:32,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:03:32,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:03:32,896 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:03:32,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:03:32,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:03:32,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:03:32,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:03:32,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:03:32,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:03:32,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:03:32,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:03:32,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:03:32,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:03:32,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:03:32,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:03:32,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:03:32,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:03:32,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:03:32,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:03:32,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:03:32,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:03:32,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:03:32,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:03:32,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:03:32,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:03:32,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:03:32,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:03:32,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:03:32,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:03:32,956 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:03:32,956 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:03:32,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:03:32,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:03:32,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:03:32,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:03:32,959 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:03:32,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:03:32,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:03:32,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:03:32,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:03:32,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:03:32,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:03:32,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:03:32,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:03:32,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:03:32,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:03:32,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:03:32,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:03:32,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:03:32,964 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:03:32,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:03:32,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:03:32,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:03:32,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:03:32,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:03:32,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:03:32,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:03:32,967 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:03:32,967 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:03:32,967 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:03:32,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:03:32,976 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_094b9402-42f7-4a85-8e03-eab37d014abf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b979445b16a7d0cbf48464bf7b748fed9f6cd2ca88a888f2b108d83230a494 [2021-10-21 20:03:33,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:03:33,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:03:33,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:03:33,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:03:33,295 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:03:33,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-10-21 20:03:33,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/data/0350324f7/68e2061fec6e416f847a5fb890eab9fc/FLAGf8215d7a1 [2021-10-21 20:03:33,798 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:03:33,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c [2021-10-21 20:03:33,805 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/data/0350324f7/68e2061fec6e416f847a5fb890eab9fc/FLAGf8215d7a1 [2021-10-21 20:03:34,196 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/data/0350324f7/68e2061fec6e416f847a5fb890eab9fc [2021-10-21 20:03:34,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:03:34,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:03:34,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:03:34,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:03:34,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:03:34,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d0aaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34, skipping insertion in model container [2021-10-21 20:03:34,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:03:34,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:03:34,394 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_094b9402-42f7-4a85-8e03-eab37d014abf/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-10-21 20:03:34,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:03:34,418 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:03:34,432 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_094b9402-42f7-4a85-8e03-eab37d014abf/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2021-10-21 20:03:34,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:03:34,452 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:03:34,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34 WrapperNode [2021-10-21 20:03:34,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:03:34,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:03:34,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:03:34,454 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:03:34,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:03:34,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:03:34,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:03:34,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:03:34,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:03:34,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:03:34,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:03:34,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:03:34,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (1/1) ... [2021-10-21 20:03:34,538 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:03:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:34,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:34,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:03:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:03:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:03:34,884 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:03:34,885 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-21 20:03:34,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:34 BoogieIcfgContainer [2021-10-21 20:03:34,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:03:34,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:03:34,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:03:34,894 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:03:34,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:03:34" (1/3) ... [2021-10-21 20:03:34,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6b7e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:03:34, skipping insertion in model container [2021-10-21 20:03:34,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:34" (2/3) ... [2021-10-21 20:03:34,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6b7e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:03:34, skipping insertion in model container [2021-10-21 20:03:34,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:34" (3/3) ... [2021-10-21 20:03:34,911 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2021-10-21 20:03:34,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:03:34,924 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 20:03:34,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:03:34,990 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 20:03:34,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-21 20:03:35,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 25 states have (on average 1.56) internal successors, (39), 27 states have internal predecessors, (39), 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 20:03:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:03:35,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:35,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:35,007 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:35,012 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2021-10-21 20:03:35,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:35,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571374305] [2021-10-21 20:03:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:35,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:35,168 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 20:03:35,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:35,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571374305] [2021-10-21 20:03:35,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571374305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:35,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:35,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:03:35,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525194551] [2021-10-21 20:03:35,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:03:35,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:35,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:03:35,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:03:35,191 INFO L87 Difference]: Start difference. First operand has 28 states, 25 states have (on average 1.56) internal successors, (39), 27 states have internal predecessors, (39), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 20:03:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:35,205 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2021-10-21 20:03:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:03:35,206 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2021-10-21 20:03:35,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:35,214 INFO L225 Difference]: With dead ends: 53 [2021-10-21 20:03:35,214 INFO L226 Difference]: Without dead ends: 24 [2021-10-21 20:03:35,217 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 20:03:35,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-21 20:03:35,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-21 20:03:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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 20:03:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-10-21 20:03:35,293 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2021-10-21 20:03:35,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:35,295 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-10-21 20:03:35,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 20:03:35,296 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-10-21 20:03:35,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 20:03:35,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:35,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:35,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:03:35,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:35,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:35,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2021-10-21 20:03:35,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:35,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926506664] [2021-10-21 20:03:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:35,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:35,345 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:03:35,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551523405] [2021-10-21 20:03:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:35,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:35,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:35,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:03:35,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:03:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:35,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:03:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:35,764 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 20:03:35,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:35,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926506664] [2021-10-21 20:03:35,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:03:35,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551523405] [2021-10-21 20:03:35,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551523405] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:35,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:35,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 20:03:35,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942737408] [2021-10-21 20:03:35,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 20:03:35,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 20:03:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 20:03:35,770 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20:03:35,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:35,904 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-10-21 20:03:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 20:03:35,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-21 20:03:35,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:35,906 INFO L225 Difference]: With dead ends: 35 [2021-10-21 20:03:35,906 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:03:35,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 20:03:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:03:35,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-10-21 20:03:35,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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 20:03:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-21 20:03:35,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2021-10-21 20:03:35,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:35,911 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-21 20:03:35,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20:03:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-21 20:03:35,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:03:35,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:35,913 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:35,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:36,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:36,124 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:36,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1065279453, now seen corresponding path program 1 times [2021-10-21 20:03:36,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:36,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263338238] [2021-10-21 20:03:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:36,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:36,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:03:36,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131687017] [2021-10-21 20:03:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:36,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:36,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:36,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:03:36,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:03:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:36,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:03:36,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:36,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:36,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263338238] [2021-10-21 20:03:36,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:03:36,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131687017] [2021-10-21 20:03:36,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131687017] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:36,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:36,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:03:36,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270725219] [2021-10-21 20:03:36,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:03:36,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:36,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:36,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:36,733 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 20:03:36,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:36,871 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-21 20:03:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:03:36,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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) Word has length 21 [2021-10-21 20:03:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:36,873 INFO L225 Difference]: With dead ends: 38 [2021-10-21 20:03:36,873 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 20:03:36,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:03:36,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 20:03:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-21 20:03:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 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 20:03:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-21 20:03:36,879 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2021-10-21 20:03:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:36,879 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-21 20:03:36,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 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 20:03:36,880 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-21 20:03:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 20:03:36,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:03:36,881 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:03:36,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:37,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:37,096 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:03:37,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:37,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1065339035, now seen corresponding path program 1 times [2021-10-21 20:03:37,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:37,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421512001] [2021-10-21 20:03:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:37,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:37,118 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 20:03:37,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1356801077] [2021-10-21 20:03:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:37,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:37,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:37,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:03:37,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 20:03:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:37,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:03:37,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:37,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:37,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:37,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421512001] [2021-10-21 20:03:37,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 20:03:37,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356801077] [2021-10-21 20:03:37,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356801077] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:03:37,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:03:37,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 20:03:37,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584865683] [2021-10-21 20:03:37,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:03:37,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:37,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:03:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:03:37,638 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 20:03:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:37,823 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-10-21 20:03:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:03:37,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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) Word has length 21 [2021-10-21 20:03:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:03:37,824 INFO L225 Difference]: With dead ends: 28 [2021-10-21 20:03:37,824 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:03:37,825 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 209.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:03:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:03:37,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:03:37,825 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 20:03:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:03:37,825 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-21 20:03:37,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:03:37,826 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:37,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 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 20:03:37,826 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:03:37,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:03:37,828 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:03:37,829 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:03:37,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:38,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:38,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:03:38,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:38,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:38,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:38,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:03:38,157 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 20:03:38,158 INFO L860 garLoopResultBuilder]: At program point L56(lines 19 57) the Hoare annotation is: true [2021-10-21 20:03:38,158 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:03:38,158 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:03:38,158 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:03:38,158 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 20:03:38,159 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-21 20:03:38,159 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 40 41) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~y~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~x~0 4294967296))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 .cse0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (<= .cse0 1) (<= .cse1 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (<= 1 .cse1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) [2021-10-21 20:03:38,159 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-21 20:03:38,159 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:03:38,159 INFO L857 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:03:38,159 INFO L860 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2021-10-21 20:03:38,159 INFO L857 garLoopResultBuilder]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point L8-4(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point L8-5(lines 8 10) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point L37-2(lines 37 50) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-21 20:03:38,160 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L9-4(line 9) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L9-6(line 9) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L9-8(line 9) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L9-10(line 9) no Hoare annotation was computed. [2021-10-21 20:03:38,161 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2021-10-21 20:03:38,162 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~y~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~x~0 4294967296))) (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 .cse0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (<= .cse0 1) (<= .cse1 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (<= 1 .cse1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) [2021-10-21 20:03:38,166 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:03:38,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:03:38 BoogieIcfgContainer [2021-10-21 20:03:38,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:03:38,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:03:38,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:03:38,181 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:03:38,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:34" (3/4) ... [2021-10-21 20:03:38,185 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:03:38,198 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-10-21 20:03:38,198 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-21 20:03:38,198 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 20:03:38,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:03:38,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:03:38,240 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:03:38,240 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:03:38,242 INFO L168 Benchmark]: Toolchain (without parser) took 4041.37 ms. Allocated memory was 86.0 MB in the beginning and 138.4 MB in the end (delta: 52.4 MB). Free memory was 49.0 MB in the beginning and 69.6 MB in the end (delta: -20.6 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:38,242 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:38,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.79 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.8 MB in the beginning and 89.9 MB in the end (delta: -41.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:38,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.60 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 88.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:38,244 INFO L168 Benchmark]: Boogie Preprocessor took 24.21 ms. Allocated memory is still 115.3 MB. Free memory was 88.3 MB in the beginning and 87.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:38,245 INFO L168 Benchmark]: RCFGBuilder took 371.96 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 76.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:38,245 INFO L168 Benchmark]: TraceAbstraction took 3289.91 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 76.3 MB in the beginning and 71.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:38,246 INFO L168 Benchmark]: Witness Printer took 59.70 ms. Allocated memory is still 138.4 MB. Free memory was 71.9 MB in the beginning and 69.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:38,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory is still 65.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.79 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 48.8 MB in the beginning and 89.9 MB in the end (delta: -41.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.60 ms. Allocated memory is still 115.3 MB. Free memory was 89.9 MB in the beginning and 88.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.21 ms. Allocated memory is still 115.3 MB. Free memory was 88.3 MB in the beginning and 87.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 371.96 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 76.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3289.91 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 76.3 MB in the beginning and 71.9 MB in the end (delta: 4.4 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 59.70 ms. Allocated memory is still 138.4 MB. Free memory was 71.9 MB in the beginning and 69.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 3185.3ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 10.6ms, AutomataDifference: 508.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 116.7ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 70 SDtfs, 54 SDslu, 74 SDs, 0 SdLazy, 114 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 174.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 355.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 46.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 77 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 25.5ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 85.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 45.5ms SsaConstructionTime, 176.2ms SatisfiabilityAnalysisTime, 1191.5ms InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 21 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 4/4 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: 40]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && a == x) && 1 <= cond) && 1 <= y % 4294967296) && a == v) && y % 4294967296 <= 1) && x % 4294967296 <= 1) && b == u) && 1 <= x % 4294967296) && b == y - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((cond == 1 && a == x) && 1 <= y % 4294967296) && a == v) && y % 4294967296 <= 1) && x % 4294967296 <= 1) && b == u) && 1 <= x % 4294967296) && b == y - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:03:38,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_094b9402-42f7-4a85-8e03-eab37d014abf/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...