./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum_array-1.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_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/sum_array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0ce6e358e97991ebbe821b374467d4ac3ee0da45122333d4b5212eb8135ac7d ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:46:37,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:46:37,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:46:37,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:46:37,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:46:37,834 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:46:37,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:46:37,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:46:37,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:46:37,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:46:37,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:46:37,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:46:37,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:46:37,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:46:37,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:46:37,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:46:37,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:46:37,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:46:37,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:46:37,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:46:37,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:46:37,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:46:37,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:46:37,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:46:37,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:46:37,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:46:37,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:46:37,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:46:37,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:46:37,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:46:37,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:46:37,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:46:37,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:46:37,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:46:37,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:46:37,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:46:37,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:46:37,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:46:37,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:46:37,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:46:37,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:46:37,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:46:37,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:46:37,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:46:37,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:46:37,957 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:46:37,957 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:46:37,957 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:46:37,957 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:46:37,958 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:46:37,958 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:46:37,958 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:46:37,959 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:46:37,959 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:46:37,960 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:46:37,960 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:46:37,960 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:46:37,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:46:37,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:46:37,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:46:37,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:46:37,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:46:37,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:46:37,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:46:37,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:46:37,963 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:46:37,963 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:46:37,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:46:37,964 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:46:37,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:46:37,964 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:46:37,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:46:37,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:46:37,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:46:37,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:46:37,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:46:37,968 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:46:37,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:46:37,968 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:46:37,968 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:46:37,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:46:37,969 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0ce6e358e97991ebbe821b374467d4ac3ee0da45122333d4b5212eb8135ac7d [2021-10-24 09:46:38,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:46:38,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:46:38,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:46:38,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:46:38,330 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:46:38,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/loops/sum_array-1.c [2021-10-24 09:46:38,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/data/4dcceb77a/8ce144983d564c7ba77ec19a1b257aac/FLAGb91c48d31 [2021-10-24 09:46:38,920 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:46:38,921 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/sv-benchmarks/c/loops/sum_array-1.c [2021-10-24 09:46:38,930 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/data/4dcceb77a/8ce144983d564c7ba77ec19a1b257aac/FLAGb91c48d31 [2021-10-24 09:46:39,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/data/4dcceb77a/8ce144983d564c7ba77ec19a1b257aac [2021-10-24 09:46:39,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:46:39,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:46:39,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:46:39,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:46:39,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:46:39,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335dee70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39, skipping insertion in model container [2021-10-24 09:46:39,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:46:39,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:46:39,538 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_aa3feb90-74c9-4b54-996b-e23f2bd94abe/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2021-10-24 09:46:39,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:46:39,592 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:46:39,609 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_aa3feb90-74c9-4b54-996b-e23f2bd94abe/sv-benchmarks/c/loops/sum_array-1.c[363,376] [2021-10-24 09:46:39,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:46:39,656 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:46:39,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39 WrapperNode [2021-10-24 09:46:39,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:46:39,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:46:39,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:46:39,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:46:39,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:46:39,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:46:39,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:46:39,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:46:39,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:46:39,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:46:39,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:46:39,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:46:39,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (1/1) ... [2021-10-24 09:46:39,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:46:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:46:39,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:46:39,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:46:39,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:46:39,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:46:39,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:46:39,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:46:39,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:46:39,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:46:39,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:46:40,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:46:40,278 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 09:46:40,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:46:40 BoogieIcfgContainer [2021-10-24 09:46:40,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:46:40,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:46:40,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:46:40,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:46:40,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:46:39" (1/3) ... [2021-10-24 09:46:40,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdba3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:46:40, skipping insertion in model container [2021-10-24 09:46:40,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:46:39" (2/3) ... [2021-10-24 09:46:40,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cdba3ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:46:40, skipping insertion in model container [2021-10-24 09:46:40,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:46:40" (3/3) ... [2021-10-24 09:46:40,297 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-10-24 09:46:40,303 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:46:40,303 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:46:40,371 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:46:40,380 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:46:40,381 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:46:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-10-24 09:46:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:46:40,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:46:40,416 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:46:40,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:46:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:46:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1363991572, now seen corresponding path program 1 times [2021-10-24 09:46:40,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:46:40,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777358045] [2021-10-24 09:46:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:46:40,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:46:40,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:46:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:46:40,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:46:40,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777358045] [2021-10-24 09:46:40,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777358045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:46:40,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:46:40,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 09:46:40,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489567068] [2021-10-24 09:46:40,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:46:40,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:46:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:46:40,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:46:40,830 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 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 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-24 09:46:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:46:40,969 INFO L93 Difference]: Finished difference Result 30 states and 44 transitions. [2021-10-24 09:46:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:46:40,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-10-24 09:46:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:46:40,981 INFO L225 Difference]: With dead ends: 30 [2021-10-24 09:46:40,981 INFO L226 Difference]: Without dead ends: 17 [2021-10-24 09:46:40,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:46:41,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-24 09:46:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-24 09:46:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 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) [2021-10-24 09:46:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-10-24 09:46:41,018 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2021-10-24 09:46:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:46:41,018 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-10-24 09:46:41,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-10-24 09:46:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-10-24 09:46:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 09:46:41,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:46:41,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:46:41,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:46:41,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:46:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:46:41,023 INFO L82 PathProgramCache]: Analyzing trace with hash -475116150, now seen corresponding path program 1 times [2021-10-24 09:46:41,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:46:41,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154574149] [2021-10-24 09:46:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:46:41,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:46:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:46:41,161 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:46:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:46:41,316 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:46:41,321 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:46:41,323 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:46:41,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:46:41,331 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:46:41,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:46:41 BoogieIcfgContainer [2021-10-24 09:46:41,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:46:41,358 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:46:41,358 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:46:41,358 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:46:41,359 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:46:40" (3/4) ... [2021-10-24 09:46:41,360 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:46:41,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa3feb90-74c9-4b54-996b-e23f2bd94abe/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:46:41,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:46:41,414 INFO L168 Benchmark]: Toolchain (without parser) took 2105.97 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 78.1 MB in the beginning and 112.4 MB in the end (delta: -34.3 MB). Peak memory consumption was 9.6 kB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,414 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:46:41,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.93 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 78.1 MB in the beginning and 118.5 MB in the end (delta: -40.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.88 ms. Allocated memory is still 144.7 MB. Free memory was 118.5 MB in the beginning and 117.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,417 INFO L168 Benchmark]: Boogie Preprocessor took 60.12 ms. Allocated memory is still 144.7 MB. Free memory was 117.0 MB in the beginning and 115.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,418 INFO L168 Benchmark]: RCFGBuilder took 489.46 ms. Allocated memory is still 144.7 MB. Free memory was 115.4 MB in the beginning and 100.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,419 INFO L168 Benchmark]: TraceAbstraction took 1074.78 ms. Allocated memory is still 144.7 MB. Free memory was 99.8 MB in the beginning and 114.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,419 INFO L168 Benchmark]: Witness Printer took 53.69 ms. Allocated memory is still 144.7 MB. Free memory was 114.5 MB in the beginning and 112.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:46:41,424 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 109.1 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.93 ms. Allocated memory was 109.1 MB in the beginning and 144.7 MB in the end (delta: 35.7 MB). Free memory was 78.1 MB in the beginning and 118.5 MB in the end (delta: -40.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.88 ms. Allocated memory is still 144.7 MB. Free memory was 118.5 MB in the beginning and 117.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.12 ms. Allocated memory is still 144.7 MB. Free memory was 117.0 MB in the beginning and 115.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 489.46 ms. Allocated memory is still 144.7 MB. Free memory was 115.4 MB in the beginning and 100.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1074.78 ms. Allocated memory is still 144.7 MB. Free memory was 99.8 MB in the beginning and 114.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 38.9 MB. Max. memory is 16.1 GB. * Witness Printer took 53.69 ms. Allocated memory is still 144.7 MB. Free memory was 114.5 MB in the beginning and 112.4 MB in the end (delta: 2.1 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 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i