./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/eqn3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/eqn3f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI --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 3c4f39de7d4cdbe0c9103e2c499bf48f3ddaeb30 .......................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 02:22:03,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:22:03,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:22:03,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:22:03,862 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:22:03,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:22:03,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:22:03,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:22:03,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:22:03,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:22:03,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:22:03,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:22:03,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:22:03,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:22:03,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:22:03,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:22:03,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:22:03,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:22:03,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:22:03,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:22:03,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:22:03,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:22:03,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:22:03,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:22:03,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:22:03,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:22:03,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:22:03,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:22:03,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:22:03,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:22:03,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:22:03,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:22:03,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:22:03,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:22:03,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:22:03,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:22:03,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:22:03,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:22:03,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:22:03,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:22:03,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:22:03,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:22:03,997 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:22:03,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:22:04,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:22:04,002 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:22:04,002 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:22:04,002 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:22:04,002 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:22:04,003 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:22:04,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:22:04,009 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:22:04,011 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:22:04,011 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:22:04,011 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:22:04,012 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:22:04,012 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:22:04,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:22:04,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:22:04,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:22:04,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:22:04,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:22:04,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:22:04,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:22:04,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:22:04,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:22:04,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:22:04,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:22:04,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:22:04,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:22:04,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:22:04,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:22:04,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:04,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:22:04,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:22:04,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:22:04,018 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:22:04,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:22:04,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:22:04,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:22:04,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:22:04,019 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_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c4f39de7d4cdbe0c9103e2c499bf48f3ddaeb30 [2021-10-11 02:22:04,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:22:04,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:22:04,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:22:04,319 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:22:04,320 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:22:04,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/eqn3f.c [2021-10-11 02:22:04,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/data/ade8b884e/b908a9b46c1e46f9b1346e64689dfb56/FLAGcc215ec7f [2021-10-11 02:22:04,859 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:22:04,860 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/sv-benchmarks/c/array-fpi/eqn3f.c [2021-10-11 02:22:04,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/data/ade8b884e/b908a9b46c1e46f9b1346e64689dfb56/FLAGcc215ec7f [2021-10-11 02:22:05,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/data/ade8b884e/b908a9b46c1e46f9b1346e64689dfb56 [2021-10-11 02:22:05,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:22:05,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:22:05,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:05,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:22:05,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:22:05,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cec8ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05, skipping insertion in model container [2021-10-11 02:22:05,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:22:05,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:22:05,416 WARN L226 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_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2021-10-11 02:22:05,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:05,444 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:22:05,454 WARN L226 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_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2021-10-11 02:22:05,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:22:05,477 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:22:05,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05 WrapperNode [2021-10-11 02:22:05,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:22:05,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:05,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:22:05,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:22:05,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:22:05,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:22:05,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:22:05,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:22:05,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... [2021-10-11 02:22:05,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:22:05,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:22:05,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:22:05,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:22:05,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:22:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:22:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:22:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:22:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:22:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:22:05,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:22:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:22:06,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:22:06,136 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-11 02:22:06,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:06 BoogieIcfgContainer [2021-10-11 02:22:06,138 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:22:06,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:22:06,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:22:06,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:22:06,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:22:05" (1/3) ... [2021-10-11 02:22:06,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7a7589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:06, skipping insertion in model container [2021-10-11 02:22:06,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:22:05" (2/3) ... [2021-10-11 02:22:06,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7a7589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:22:06, skipping insertion in model container [2021-10-11 02:22:06,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:06" (3/3) ... [2021-10-11 02:22:06,148 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2021-10-11 02:22:06,164 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:22:06,167 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:22:06,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:22:06,224 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:22:06,224 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:22:06,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:22:06,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:22:06,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:22:06,224 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:22:06,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:22:06,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:22:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2021-10-11 02:22:06,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:22:06,244 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:06,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:06,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:06,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:06,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1777971491, now seen corresponding path program 1 times [2021-10-11 02:22:06,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:06,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957840833] [2021-10-11 02:22:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:06,432 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:06,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [399573250] [2021-10-11 02:22:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:06,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:22:06,577 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:22:06,651 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:22:06,652 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:22:06,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:22:06,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:06 BoogieIcfgContainer [2021-10-11 02:22:06,900 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:06,901 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:06,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:06,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:06,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:22:06" (3/4) ... [2021-10-11 02:22:06,915 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:22:06,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86f247bd-6fb3-43c1-9068-418ff3e0bdc0/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:06,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:06,999 INFO L168 Benchmark]: Toolchain (without parser) took 1781.46 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.7 MB in the beginning and 76.6 MB in the end (delta: -16.9 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:07,000 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:07,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.10 ms. Allocated memory is still 94.4 MB. Free memory was 59.7 MB in the beginning and 70.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:07,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 68.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:07,002 INFO L168 Benchmark]: Boogie Preprocessor took 27.22 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 67.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:07,002 INFO L168 Benchmark]: RCFGBuilder took 595.14 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 44.9 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:07,003 INFO L168 Benchmark]: TraceAbstraction took 760.69 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 44.5 MB in the beginning and 78.7 MB in the end (delta: -34.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:07,003 INFO L168 Benchmark]: Witness Printer took 91.60 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:07,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 67.4 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.10 ms. Allocated memory is still 94.4 MB. Free memory was 59.7 MB in the beginning and 70.4 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.97 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 68.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.22 ms. Allocated memory is still 94.4 MB. Free memory was 68.8 MB in the beginning and 67.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 595.14 ms. Allocated memory is still 94.4 MB. Free memory was 67.5 MB in the beginning and 44.9 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 760.69 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 44.5 MB in the beginning and 78.7 MB in the end (delta: -34.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 91.60 ms. Allocated memory is still 115.3 MB. Free memory was 78.7 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 6 [L32] b[0] = 10 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i