./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina2f.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_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/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_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sina2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/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_44f1029c-406a-4060-a45e-404b69a5900f/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 18a438d9195efc31a76e9f94e16dcade46dcc096 ................................................................................................................................................................................................................................................................................................................................................................... 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 02:29:19,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:19,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:19,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:19,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:19,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:19,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:19,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:19,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:19,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:19,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:19,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:19,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:19,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:19,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:19,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:19,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:19,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:19,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:19,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:19,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:19,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:19,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:19,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:19,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:19,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:19,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:19,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:19,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:19,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:19,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:19,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:19,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:19,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:19,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:19,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:19,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:19,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:19,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:19,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:19,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:19,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:19,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:19,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:19,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:19,346 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:19,346 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:19,346 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:19,346 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:19,346 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:19,347 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:19,347 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:19,347 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:19,347 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:19,348 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:19,348 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:19,348 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:19,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:19,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:19,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:19,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:19,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:19,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:19,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:19,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:19,351 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:19,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:19,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:19,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:19,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:19,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:19,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:19,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:19,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:19,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:19,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:19,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:19,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:19,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:19,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:19,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:19,354 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_44f1029c-406a-4060-a45e-404b69a5900f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18a438d9195efc31a76e9f94e16dcade46dcc096 [2021-10-11 02:29:19,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:19,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:19,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:19,604 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:19,605 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:19,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/sina2f.c [2021-10-11 02:29:19,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/data/78cda8e0f/b9f5241d67174882b646d06143f0ea31/FLAGfd6a47601 [2021-10-11 02:29:20,147 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:20,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/sv-benchmarks/c/array-fpi/sina2f.c [2021-10-11 02:29:20,162 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/data/78cda8e0f/b9f5241d67174882b646d06143f0ea31/FLAGfd6a47601 [2021-10-11 02:29:20,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/data/78cda8e0f/b9f5241d67174882b646d06143f0ea31 [2021-10-11 02:29:20,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:20,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:20,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:20,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:20,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:20,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d247069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20, skipping insertion in model container [2021-10-11 02:29:20,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:20,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:20,752 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_44f1029c-406a-4060-a45e-404b69a5900f/sv-benchmarks/c/array-fpi/sina2f.c[589,602] [2021-10-11 02:29:20,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:20,781 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:20,793 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_44f1029c-406a-4060-a45e-404b69a5900f/sv-benchmarks/c/array-fpi/sina2f.c[589,602] [2021-10-11 02:29:20,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:20,816 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:20,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20 WrapperNode [2021-10-11 02:29:20,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:20,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:20,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:20,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:20,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:20,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:20,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:20,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:20,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... [2021-10-11 02:29:20,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:20,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:20,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:20,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:20,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/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 02:29:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:20,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:29:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:29:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:20,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:29:20,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:29:21,382 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:21,382 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-11 02:29:21,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:21 BoogieIcfgContainer [2021-10-11 02:29:21,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:21,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:21,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:21,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:21,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:20" (1/3) ... [2021-10-11 02:29:21,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c051b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:21, skipping insertion in model container [2021-10-11 02:29:21,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:20" (2/3) ... [2021-10-11 02:29:21,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c051b18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:21, skipping insertion in model container [2021-10-11 02:29:21,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:21" (3/3) ... [2021-10-11 02:29:21,399 INFO L111 eAbstractionObserver]: Analyzing ICFG sina2f.c [2021-10-11 02:29:21,412 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:21,416 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:21,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:21,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:21,452 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:21,452 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:21,452 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:21,453 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:21,453 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:21,453 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:21,453 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:29:21,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:29:21,471 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:21,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:21,472 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -16623148, now seen corresponding path program 1 times [2021-10-11 02:29:21,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:21,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879563977] [2021-10-11 02:29:21,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:21,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879563977] [2021-10-11 02:29:21,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:21,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:21,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077940415] [2021-10-11 02:29:21,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:21,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:21,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:21,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:21,690 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2021-10-11 02:29:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:21,760 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2021-10-11 02:29:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:21,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2021-10-11 02:29:21,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:21,771 INFO L225 Difference]: With dead ends: 22 [2021-10-11 02:29:21,771 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:29:21,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:21,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:29:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:29:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:29:21,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2021-10-11 02:29:21,872 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2021-10-11 02:29:21,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:21,873 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-10-11 02:29:21,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2021-10-11 02:29:21,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:29:21,874 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:21,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:21,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:21,876 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:21,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1034553963, now seen corresponding path program 1 times [2021-10-11 02:29:21,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:21,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918309643] [2021-10-11 02:29:21,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:29:21,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918309643] [2021-10-11 02:29:21,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:21,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:21,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041515211] [2021-10-11 02:29:21,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:21,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:21,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:21,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:21,957 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 4 states. [2021-10-11 02:29:22,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:22,002 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-10-11 02:29:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:22,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:29:22,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:22,004 INFO L225 Difference]: With dead ends: 24 [2021-10-11 02:29:22,004 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:29:22,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:22,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:29:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-10-11 02:29:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-11 02:29:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-10-11 02:29:22,009 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2021-10-11 02:29:22,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:22,010 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-10-11 02:29:22,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:22,010 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-10-11 02:29:22,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:29:22,010 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:22,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:22,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:29:22,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:22,012 INFO L82 PathProgramCache]: Analyzing trace with hash 229702267, now seen corresponding path program 1 times [2021-10-11 02:29:22,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:22,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762198434] [2021-10-11 02:29:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:22,072 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:22,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:22,180 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:22,180 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:22,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:22,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:22 BoogieIcfgContainer [2021-10-11 02:29:22,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:22,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:22,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:22,221 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:22,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:21" (3/4) ... [2021-10-11 02:29:22,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:22,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44f1029c-406a-4060-a45e-404b69a5900f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:22,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:22,277 INFO L168 Benchmark]: Toolchain (without parser) took 1718.21 ms. Allocated memory was 90.2 MB in the beginning and 140.5 MB in the end (delta: 50.3 MB). Free memory was 57.3 MB in the beginning and 96.9 MB in the end (delta: -39.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:22,277 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:22,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.10 ms. Allocated memory was 90.2 MB in the beginning and 140.5 MB in the end (delta: 50.3 MB). Free memory was 57.1 MB in the beginning and 116.2 MB in the end (delta: -59.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:22,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.85 ms. Allocated memory is still 140.5 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:22,280 INFO L168 Benchmark]: Boogie Preprocessor took 28.09 ms. Allocated memory is still 140.5 MB. Free memory was 114.5 MB in the beginning and 113.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:22,280 INFO L168 Benchmark]: RCFGBuilder took 502.43 ms. Allocated memory is still 140.5 MB. Free memory was 113.5 MB in the beginning and 88.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:22,281 INFO L168 Benchmark]: TraceAbstraction took 829.58 ms. Allocated memory is still 140.5 MB. Free memory was 88.4 MB in the beginning and 99.0 MB in the end (delta: -10.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:22,282 INFO L168 Benchmark]: Witness Printer took 54.62 ms. Allocated memory is still 140.5 MB. Free memory was 99.0 MB in the beginning and 96.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:22,286 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 90.2 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.10 ms. Allocated memory was 90.2 MB in the beginning and 140.5 MB in the end (delta: 50.3 MB). Free memory was 57.1 MB in the beginning and 116.2 MB in the end (delta: -59.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.85 ms. Allocated memory is still 140.5 MB. Free memory was 116.2 MB in the beginning and 114.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.09 ms. Allocated memory is still 140.5 MB. Free memory was 114.5 MB in the beginning and 113.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 502.43 ms. Allocated memory is still 140.5 MB. Free memory was 113.5 MB in the beginning and 88.9 MB in the end (delta: 24.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 829.58 ms. Allocated memory is still 140.5 MB. Free memory was 88.4 MB in the beginning and 99.0 MB in the end (delta: -10.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 54.62 ms. Allocated memory is still 140.5 MB. Free memory was 99.0 MB in the beginning and 96.9 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: - 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 sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 1 [L32] i=0 VAL [N=1] [L32] COND TRUE i