./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --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_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/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_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/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_439112fe-d662-4770-83f1-bbc7373f1964/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 a425935058ca162f2ae5199ba6a1c3df525b690e27394effb254039bf608ee75 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:25:57,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:25:57,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:25:57,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:25:57,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:25:57,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:25:57,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:25:57,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:25:57,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:25:57,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:25:57,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:25:57,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:25:57,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:25:57,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:25:57,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:25:57,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:25:57,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:25:57,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:25:57,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:25:57,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:25:57,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:25:57,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:25:57,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:25:57,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:25:57,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:25:57,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:25:57,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:25:57,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:25:57,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:25:57,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:25:57,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:25:57,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:25:57,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:25:57,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:25:57,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:25:57,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:25:57,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:25:57,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:25:57,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:25:57,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:25:57,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:25:57,637 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 20:25:57,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:25:57,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:25:57,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:25:57,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:25:57,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:25:57,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:25:57,688 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:25:57,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:25:57,688 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:25:57,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:25:57,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:25:57,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:25:57,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 20:25:57,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 20:25:57,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 20:25:57,690 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:25:57,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:25:57,690 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:25:57,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 20:25:57,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:25:57,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:25:57,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 20:25:57,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:25:57,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:25:57,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 20:25:57,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 20:25:57,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:25:57,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 20:25:57,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 20:25:57,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 20:25:57,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 20:25:57,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:25:57,693 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_439112fe-d662-4770-83f1-bbc7373f1964/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a425935058ca162f2ae5199ba6a1c3df525b690e27394effb254039bf608ee75 [2021-10-21 20:25:57,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:25:57,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:25:57,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:25:57,956 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:25:57,958 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:25:57,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-10-21 20:25:58,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/data/82cef2097/da6f7bff8f6d444083d63b9f9f73a12a/FLAGc94384fd6 [2021-10-21 20:25:58,506 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:25:58,507 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-10-21 20:25:58,513 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/data/82cef2097/da6f7bff8f6d444083d63b9f9f73a12a/FLAGc94384fd6 [2021-10-21 20:25:58,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/data/82cef2097/da6f7bff8f6d444083d63b9f9f73a12a [2021-10-21 20:25:58,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:25:58,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:25:58,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:25:58,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:25:58,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:25:58,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:25:58" (1/1) ... [2021-10-21 20:25:58,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57c2ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:58, skipping insertion in model container [2021-10-21 20:25:58,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:25:58" (1/1) ... [2021-10-21 20:25:58,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:25:58,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:25:59,070 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_439112fe-d662-4770-83f1-bbc7373f1964/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-10-21 20:25:59,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:25:59,093 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:25:59,106 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_439112fe-d662-4770-83f1-bbc7373f1964/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-10-21 20:25:59,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:25:59,127 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:25:59,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59 WrapperNode [2021-10-21 20:25:59,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:25:59,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:25:59,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:25:59,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:25:59,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:25:59,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:25:59,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:25:59,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:25:59,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:25:59,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:25:59,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:25:59,195 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:25:59,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (1/1) ... [2021-10-21 20:25:59,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 20:25:59,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:25:59,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 20:25:59,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 20:25:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:25:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:25:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:25:59,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:25:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 20:25:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 20:25:59,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:25:59,543 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-21 20:25:59,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:59 BoogieIcfgContainer [2021-10-21 20:25:59,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:25:59,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 20:25:59,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 20:25:59,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 20:25:59,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 08:25:58" (1/3) ... [2021-10-21 20:25:59,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba9a4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:25:59, skipping insertion in model container [2021-10-21 20:25:59,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:25:59" (2/3) ... [2021-10-21 20:25:59,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba9a4b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 08:25:59, skipping insertion in model container [2021-10-21 20:25:59,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:59" (3/3) ... [2021-10-21 20:25:59,559 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2021-10-21 20:25:59,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 20:25:59,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 20:25:59,652 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 20:25:59,660 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 20:25:59,660 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-21 20:25:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 21 states have internal predecessors, (31), 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 20:25:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:25:59,709 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:25:59,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:25:59,711 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:25:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:25:59,719 INFO L82 PathProgramCache]: Analyzing trace with hash 119391765, now seen corresponding path program 1 times [2021-10-21 20:25:59,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:25:59,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019493887] [2021-10-21 20:25:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:25:59,744 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:25:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:25:59,937 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 20:25:59,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:25:59,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019493887] [2021-10-21 20:25:59,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019493887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:25:59,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:25:59,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 20:25:59,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721215462] [2021-10-21 20:25:59,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 20:25:59,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:25:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 20:25:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 20:25:59,970 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 21 states have internal predecessors, (31), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 20:25:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:25:59,989 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2021-10-21 20:25:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:25:59,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-21 20:25:59,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:00,001 INFO L225 Difference]: With dead ends: 41 [2021-10-21 20:26:00,001 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 20:26:00,005 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 20:26:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 20:26:00,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-21 20:26:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 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 20:26:00,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 20:26:00,046 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-10-21 20:26:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:00,047 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 20:26:00,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 20:26:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 20:26:00,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 20:26:00,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:00,049 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:00,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 20:26:00,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash 176709649, now seen corresponding path program 1 times [2021-10-21 20:26:00,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:00,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677396893] [2021-10-21 20:26:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:00,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:00,287 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 20:26:00,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:00,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677396893] [2021-10-21 20:26:00,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677396893] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:00,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:00,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 20:26:00,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404963393] [2021-10-21 20:26:00,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 20:26:00,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:00,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:26:00,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:26:00,293 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 20:26:00,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:00,390 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-10-21 20:26:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 20:26:00,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 8 [2021-10-21 20:26:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:00,393 INFO L225 Difference]: With dead ends: 31 [2021-10-21 20:26:00,393 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 20:26:00,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.5ms TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-21 20:26:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 20:26:00,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2021-10-21 20:26:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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 20:26:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-21 20:26:00,402 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2021-10-21 20:26:00,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:00,402 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-21 20:26:00,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 20:26:00,403 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-21 20:26:00,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 20:26:00,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:00,404 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:00,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 20:26:00,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:00,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:00,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1981911752, now seen corresponding path program 1 times [2021-10-21 20:26:00,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:00,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89272240] [2021-10-21 20:26:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:00,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:00,484 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 20:26:00,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:00,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89272240] [2021-10-21 20:26:00,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89272240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:00,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:26:00,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 20:26:00,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942473856] [2021-10-21 20:26:00,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 20:26:00,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:00,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 20:26:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:26:00,495 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 20:26:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:00,509 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-10-21 20:26:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 20:26:00,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2021-10-21 20:26:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:00,512 INFO L225 Difference]: With dead ends: 29 [2021-10-21 20:26:00,513 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 20:26:00,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 20:26:00,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 20:26:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-21 20:26:00,521 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 20:26:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-21 20:26:00,523 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-10-21 20:26:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:00,523 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-21 20:26:00,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 20:26:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-21 20:26:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 20:26:00,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:00,525 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:00,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 20:26:00,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1303994310, now seen corresponding path program 1 times [2021-10-21 20:26:00,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:00,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765371148] [2021-10-21 20:26:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:00,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:00,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:00,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:00,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765371148] [2021-10-21 20:26:00,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765371148] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:00,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493533830] [2021-10-21 20:26:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:00,848 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:00,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:00,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 20:26:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:01,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:26:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:01,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493533830] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:01,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:26:01,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-10-21 20:26:01,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206262298] [2021-10-21 20:26:01,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 20:26:01,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:01,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:26:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:26:01,620 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 20:26:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:01,853 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-21 20:26:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 20:26:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 20:26:01,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:01,855 INFO L225 Difference]: With dead ends: 33 [2021-10-21 20:26:01,855 INFO L226 Difference]: Without dead ends: 31 [2021-10-21 20:26:01,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 257.2ms TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-10-21 20:26:01,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-21 20:26:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2021-10-21 20:26:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 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 20:26:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 20:26:01,862 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-10-21 20:26:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:01,862 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 20:26:01,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 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 20:26:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 20:26:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 20:26:01,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 20:26:01,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:26:01,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-21 20:26:02,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:02,078 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 20:26:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:26:02,079 INFO L82 PathProgramCache]: Analyzing trace with hash -993111123, now seen corresponding path program 1 times [2021-10-21 20:26:02,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:26:02,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799929250] [2021-10-21 20:26:02,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:02,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:26:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:02,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:26:02,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799929250] [2021-10-21 20:26:02,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799929250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:26:02,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098853483] [2021-10-21 20:26:02,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:26:02,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:02,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:26:02,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:26:02,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 20:26:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:26:03,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-21 20:26:03,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:26:06,166 INFO L354 Elim1Store]: treesize reduction 464, result has 1.5 percent of original size [2021-10-21 20:26:06,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 319 treesize of output 183 [2021-10-21 20:26:06,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:26:06,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098853483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:26:06,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-21 20:26:06,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 13 [2021-10-21 20:26:06,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049704343] [2021-10-21 20:26:06,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 20:26:06,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:26:06,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 20:26:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:26:06,725 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 20:26:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:26:07,712 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-21 20:26:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:26:07,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 15 [2021-10-21 20:26:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 20:26:07,714 INFO L225 Difference]: With dead ends: 25 [2021-10-21 20:26:07,715 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 20:26:07,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1162.0ms TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2021-10-21 20:26:07,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 20:26:07,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 20:26:07,716 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 20:26:07,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:26:07,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-21 20:26:07,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 20:26:07,719 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:26:07,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 20:26:07,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:26:07,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 20:26:07,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:07,731 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 20:26:07,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:26:07,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:26:07,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 20:26:07,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:07,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:07,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:07,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:26:08,336 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-10-21 20:26:08,336 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:26:08,336 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:26:08,336 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:26:08,336 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-10-21 20:26:08,337 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 59) no Hoare annotation was computed. [2021-10-21 20:26:08,337 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-10-21 20:26:08,337 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2021-10-21 20:26:08,337 INFO L853 garLoopResultBuilder]: At program point L45-1(lines 20 51) the Hoare annotation is: (let ((.cse0 (* 4294967296 (div ULTIMATE.start_main_~index2~0 4294967296)))) (or (and (<= ULTIMATE.start_main_~index1~0 (+ 99999 (* 4294967296 (div ULTIMATE.start_main_~index1~0 4294967296)))) (<= ULTIMATE.start_main_~index2~0 (+ 99999 .cse0)) (= ULTIMATE.start_main_~loop_entered~0 0)) (let ((.cse5 (div (+ ULTIMATE.start_main_~index2~0 1) 4294967296)) (.cse4 (div (+ (- 1) ULTIMATE.start_main_~index1~0) 4294967296))) (and (let ((.cse3 (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|))) (let ((.cse1 (select .cse3 (+ (* ULTIMATE.start_main_~index2~0 4) (* .cse5 (- 17179869184)) 4 |ULTIMATE.start_main_~#array~0.offset|)))) (<= .cse1 (let ((.cse2 (select .cse3 (+ (* .cse4 (- 17179869184)) (* ULTIMATE.start_main_~index1~0 4) (- 4) |ULTIMATE.start_main_~#array~0.offset|)))) (+ (* 4294967296 (div (+ .cse1 (* .cse2 (- 1))) 4294967296)) .cse2))))) (<= (+ ULTIMATE.start_main_~index1~0 (* 4294967296 .cse5)) (+ ULTIMATE.start_main_~index2~0 (* 4294967296 .cse4) 1)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~index2~0 (+ 99998 .cse0)))))) [2021-10-21 20:26:08,338 INFO L857 garLoopResultBuilder]: For program point L45-2(lines 34 61) no Hoare annotation was computed. [2021-10-21 20:26:08,338 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 61) no Hoare annotation was computed. [2021-10-21 20:26:08,338 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:26:08,338 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2021-10-21 20:26:08,339 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 23 29) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~index2~0 (+ 99999 (* 4294967296 (div ULTIMATE.start_main_~index2~0 4294967296)))) (< (mod ULTIMATE.start_main_~index1~0 4294967296) (mod ULTIMATE.start_main_~index2~0 4294967296))) [2021-10-21 20:26:08,339 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2021-10-21 20:26:08,339 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-21 20:26:08,339 INFO L853 garLoopResultBuilder]: At program point L25-5(lines 23 29) the Hoare annotation is: (let ((.cse4 (div (+ ULTIMATE.start_main_~index2~0 1) 4294967296))) (let ((.cse3 (div (+ (- 1) ULTIMATE.start_main_~index1~0) 4294967296)) (.cse5 (* 4294967296 .cse4))) (and (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|))) (let ((.cse0 (select .cse2 (+ (* ULTIMATE.start_main_~index2~0 4) (* .cse4 (- 17179869184)) 4 |ULTIMATE.start_main_~#array~0.offset|)))) (<= .cse0 (let ((.cse1 (select .cse2 (+ (* .cse3 (- 17179869184)) (* ULTIMATE.start_main_~index1~0 4) (- 4) |ULTIMATE.start_main_~#array~0.offset|)))) (+ (* 4294967296 (div (+ .cse0 (* .cse1 (- 1))) 4294967296)) .cse1))))) (<= (+ ULTIMATE.start_main_~index1~0 .cse5) (+ ULTIMATE.start_main_~index2~0 (* 4294967296 .cse3) 1)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~index2~0 (+ 99998 .cse5))))) [2021-10-21 20:26:08,340 INFO L853 garLoopResultBuilder]: At program point L54-2(lines 54 58) the Hoare annotation is: (let ((.cse6 (* ULTIMATE.start_main_~index1~0 4)) (.cse5 (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|)) (.cse8 (* ULTIMATE.start_main_~index2~0 4)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (let ((.cse7 (div ULTIMATE.start_main_~index2~0 4294967296))) (let ((.cse1 (* 4294967296 .cse7)) (.cse2 (div ULTIMATE.start_main_~index1~0 4294967296))) (and .cse0 (<= ULTIMATE.start_main_~index2~0 (+ 99999 .cse1)) (<= (+ ULTIMATE.start_main_~index1~0 .cse1 1) (+ ULTIMATE.start_main_~index2~0 (* 4294967296 .cse2))) (let ((.cse3 (select .cse5 (+ (* .cse7 (- 17179869184)) .cse8 |ULTIMATE.start_main_~#array~0.offset|)))) (<= .cse3 (let ((.cse4 (select .cse5 (+ .cse6 (* .cse2 (- 17179869184)) |ULTIMATE.start_main_~#array~0.offset|)))) (+ .cse4 (* 4294967296 (div (+ (* .cse4 (- 1)) .cse3) 4294967296))))))))) (let ((.cse12 (div (+ ULTIMATE.start_main_~index2~0 1) 4294967296))) (let ((.cse11 (div (+ (- 1) ULTIMATE.start_main_~index1~0) 4294967296)) (.cse13 (* 4294967296 .cse12))) (and (let ((.cse9 (select .cse5 (+ .cse8 (* .cse12 (- 17179869184)) 4 |ULTIMATE.start_main_~#array~0.offset|)))) (<= .cse9 (let ((.cse10 (select .cse5 (+ (* .cse11 (- 17179869184)) .cse6 (- 4) |ULTIMATE.start_main_~#array~0.offset|)))) (+ (* 4294967296 (div (+ .cse9 (* .cse10 (- 1))) 4294967296)) .cse10)))) (<= (+ ULTIMATE.start_main_~index1~0 .cse13) (+ ULTIMATE.start_main_~index2~0 (* 4294967296 .cse11) 1)) .cse0 (<= ULTIMATE.start_main_~index2~0 (+ 99998 .cse13))))))) [2021-10-21 20:26:08,340 INFO L857 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2021-10-21 20:26:08,340 INFO L857 garLoopResultBuilder]: For program point L21-4(line 21) no Hoare annotation was computed. [2021-10-21 20:26:08,340 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-21 20:26:08,340 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-21 20:26:08,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:26:08,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:26:08 BoogieIcfgContainer [2021-10-21 20:26:08,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:26:08,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:26:08,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:26:08,384 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:26:08,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:25:59" (3/4) ... [2021-10-21 20:26:08,389 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:26:08,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-21 20:26:08,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:26:08,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-21 20:26:08,403 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:26:08,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:26:08,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:26:08,465 INFO L168 Benchmark]: Toolchain (without parser) took 9562.30 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 65.3 MB in the beginning and 72.8 MB in the end (delta: -7.5 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:08,466 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:08,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.53 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 55.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:08,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.17 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:26:08,468 INFO L168 Benchmark]: Boogie Preprocessor took 26.00 ms. Allocated memory is still 98.6 MB. Free memory was 53.4 MB in the beginning and 52.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:08,468 INFO L168 Benchmark]: RCFGBuilder took 351.32 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 52.1 MB in the beginning and 126.1 MB in the end (delta: -74.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:08,469 INFO L168 Benchmark]: TraceAbstraction took 8835.80 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 77.0 MB in the end (delta: 49.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:08,470 INFO L168 Benchmark]: Witness Printer took 79.76 ms. Allocated memory is still 153.1 MB. Free memory was 77.0 MB in the beginning and 72.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:26:08,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 67.7 MB in the end (delta: 61.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 219.53 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 55.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.17 ms. Allocated memory is still 98.6 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.00 ms. Allocated memory is still 98.6 MB. Free memory was 53.4 MB in the beginning and 52.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 351.32 ms. Allocated memory was 98.6 MB in the beginning and 153.1 MB in the end (delta: 54.5 MB). Free memory was 52.1 MB in the beginning and 126.1 MB in the end (delta: -74.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8835.80 ms. Allocated memory is still 153.1 MB. Free memory was 126.1 MB in the beginning and 77.0 MB in the end (delta: 49.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. * Witness Printer took 79.76 ms. Allocated memory is still 153.1 MB. Free memory was 77.0 MB in the beginning and 72.8 MB in the end (delta: 4.2 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: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 26]: 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, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 8712.0ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 25.1ms, AutomataDifference: 1411.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 403.3ms, InitialAbstractionConstructionTime: 27.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 77 SDtfs, 89 SDslu, 87 SDs, 0 SdLazy, 148 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 349.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1491.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 472 HoareAnnotationTreeSize, 4 FomulaSimplifications, 479 FormulaSimplificationTreeSizeReduction, 54.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 353 FormulaSimplificationTreeSizeReductionInter, 339.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 37.3ms SsaConstructionTime, 588.9ms SatisfiabilityAnalysisTime, 5368.7ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 1522 SizeOfPredicates, 20 NumberOfNonLiveVariables, 162 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/6 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: 23]: Loop Invariant Derived loop invariant: (1 == cond && index2 <= 99999 + 4294967296 * (index2 / 4294967296)) && index1 % 4294967296 < index2 % 4294967296 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (((1 <= cond && index2 <= 99999 + 4294967296 * (index2 / 4294967296)) && index1 + 4294967296 * (index2 / 4294967296) + 1 <= index2 + 4294967296 * (index1 / 4294967296)) && unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array] <= unknown-#memory_int-unknown[array][index1 * 4 + index1 / 4294967296 * -17179869184 + array] + 4294967296 * ((unknown-#memory_int-unknown[array][index1 * 4 + index1 / 4294967296 * -17179869184 + array] * -1 + unknown-#memory_int-unknown[array][index2 / 4294967296 * -17179869184 + index2 * 4 + array]) / 4294967296)) || (((unknown-#memory_int-unknown[array][index2 * 4 + (index2 + 1) / 4294967296 * -17179869184 + 4 + array] <= 4294967296 * ((unknown-#memory_int-unknown[array][index2 * 4 + (index2 + 1) / 4294967296 * -17179869184 + 4 + array] + unknown-#memory_int-unknown[array][(-1 + index1) / 4294967296 * -17179869184 + index1 * 4 + -4 + array] * -1) / 4294967296) + unknown-#memory_int-unknown[array][(-1 + index1) / 4294967296 * -17179869184 + index1 * 4 + -4 + array] && index1 + 4294967296 * ((index2 + 1) / 4294967296) <= index2 + 4294967296 * ((-1 + index1) / 4294967296) + 1) && 1 <= cond) && index2 <= 99998 + 4294967296 * ((index2 + 1) / 4294967296)) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((unknown-#memory_int-unknown[array][index2 * 4 + (index2 + 1) / 4294967296 * -17179869184 + 4 + array] <= 4294967296 * ((unknown-#memory_int-unknown[array][index2 * 4 + (index2 + 1) / 4294967296 * -17179869184 + 4 + array] + unknown-#memory_int-unknown[array][(-1 + index1) / 4294967296 * -17179869184 + index1 * 4 + -4 + array] * -1) / 4294967296) + unknown-#memory_int-unknown[array][(-1 + index1) / 4294967296 * -17179869184 + index1 * 4 + -4 + array] && index1 + 4294967296 * ((index2 + 1) / 4294967296) <= index2 + 4294967296 * ((-1 + index1) / 4294967296) + 1) && 1 <= cond) && index2 <= 99998 + 4294967296 * ((index2 + 1) / 4294967296) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((index1 <= 99999 + 4294967296 * (index1 / 4294967296) && index2 <= 99999 + 4294967296 * (index2 / 4294967296)) && loop_entered == 0) || (((unknown-#memory_int-unknown[array][index2 * 4 + (index2 + 1) / 4294967296 * -17179869184 + 4 + array] <= 4294967296 * ((unknown-#memory_int-unknown[array][index2 * 4 + (index2 + 1) / 4294967296 * -17179869184 + 4 + array] + unknown-#memory_int-unknown[array][(-1 + index1) / 4294967296 * -17179869184 + index1 * 4 + -4 + array] * -1) / 4294967296) + unknown-#memory_int-unknown[array][(-1 + index1) / 4294967296 * -17179869184 + index1 * 4 + -4 + array] && index1 + 4294967296 * ((index2 + 1) / 4294967296) <= index2 + 4294967296 * ((-1 + index1) / 4294967296) + 1) && 1 <= cond) && index2 <= 99998 + 4294967296 * (index2 / 4294967296)) RESULT: Ultimate proved your program to be correct! [2021-10-21 20:26:08,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_439112fe-d662-4770-83f1-bbc7373f1964/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...