./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2of.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/res2of.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan --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 ab5f5575b4f404d180fabd8e1f95043fb9254d7e ........................................................................................................................................................................................................................................................................................................................................................................................ 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-a4ecdab [2020-11-28 07:23:59,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:23:59,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:23:59,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:23:59,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:23:59,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:23:59,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:23:59,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:23:59,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:23:59,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:23:59,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:23:59,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:23:59,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:23:59,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:23:59,186 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:23:59,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:23:59,191 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:23:59,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:23:59,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:23:59,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:23:59,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:23:59,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:23:59,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:23:59,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:23:59,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:23:59,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:23:59,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:23:59,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:23:59,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:23:59,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:23:59,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:23:59,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:23:59,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:23:59,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:23:59,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:23:59,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:23:59,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:23:59,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:23:59,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:23:59,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:23:59,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:23:59,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:23:59,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:23:59,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:23:59,300 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:23:59,300 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:23:59,301 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:23:59,301 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:23:59,301 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:23:59,301 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:23:59,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:23:59,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:23:59,307 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:23:59,307 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:23:59,307 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:23:59,308 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:23:59,308 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:23:59,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:23:59,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:23:59,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:23:59,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:23:59,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:23:59,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:23:59,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:23:59,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:23:59,310 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:23:59,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:23:59,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:23:59,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:23:59,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:23:59,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:23:59,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:23:59,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:23:59,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:23:59,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:23:59,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:23:59,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:23:59,313 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:23:59,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:23:59,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:23:59,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:23:59,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:23:59,314 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-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab5f5575b4f404d180fabd8e1f95043fb9254d7e [2020-11-28 07:23:59,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:23:59,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:23:59,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:23:59,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:23:59,701 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:23:59,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/../../sv-benchmarks/c/array-fpi/res2of.c [2020-11-28 07:23:59,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/data/3fa5549ab/fb15e83705404724a26d4c77cd72b3c5/FLAG9c9587da0 [2020-11-28 07:24:00,359 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:24:00,360 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/sv-benchmarks/c/array-fpi/res2of.c [2020-11-28 07:24:00,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/data/3fa5549ab/fb15e83705404724a26d4c77cd72b3c5/FLAG9c9587da0 [2020-11-28 07:24:00,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/data/3fa5549ab/fb15e83705404724a26d4c77cd72b3c5 [2020-11-28 07:24:00,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:24:00,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:24:00,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:24:00,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:24:00,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:24:00,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:24:00" (1/1) ... [2020-11-28 07:24:00,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c019684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:00, skipping insertion in model container [2020-11-28 07:24:00,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:24:00" (1/1) ... [2020-11-28 07:24:00,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:24:00,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:24:00,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:24:01,008 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:24:01,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:24:01,075 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:24:01,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01 WrapperNode [2020-11-28 07:24:01,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:24:01,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:24:01,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:24:01,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:24:01,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:24:01,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:24:01,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:24:01,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:24:01,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... [2020-11-28 07:24:01,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:24:01,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:24:01,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:24:01,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:24:01,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/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 [2020-11-28 07:24:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:24:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:24:01,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:24:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 07:24:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:24:01,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:24:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:24:01,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:24:01,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:24:01,877 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 07:24:01,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:24:01 BoogieIcfgContainer [2020-11-28 07:24:01,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:24:01,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:24:01,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:24:01,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:24:01,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:24:00" (1/3) ... [2020-11-28 07:24:01,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0170b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:24:01, skipping insertion in model container [2020-11-28 07:24:01,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:24:01" (2/3) ... [2020-11-28 07:24:01,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e0170b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:24:01, skipping insertion in model container [2020-11-28 07:24:01,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:24:01" (3/3) ... [2020-11-28 07:24:01,890 INFO L111 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-11-28 07:24:01,904 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:24:01,909 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:24:01,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:24:01,950 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:24:01,951 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:24:01,951 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:24:01,951 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:24:01,951 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:24:01,951 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:24:01,952 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:24:01,952 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:24:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:24:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:24:01,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:24:01,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:24:01,974 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:24:01,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:24:01,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2042725689, now seen corresponding path program 1 times [2020-11-28 07:24:01,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:24:01,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257489803] [2020-11-28 07:24:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:24:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:24:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:24:02,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257489803] [2020-11-28 07:24:02,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:24:02,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:24:02,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460589003] [2020-11-28 07:24:02,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:24:02,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:24:02,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:24:02,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:24:02,251 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-11-28 07:24:02,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:24:02,323 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2020-11-28 07:24:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:24:02,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:24:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:24:02,344 INFO L225 Difference]: With dead ends: 26 [2020-11-28 07:24:02,345 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:24:02,348 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 [2020-11-28 07:24:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:24:02,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:24:02,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:24:02,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-11-28 07:24:02,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 10 [2020-11-28 07:24:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:24:02,386 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-28 07:24:02,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:24:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 17 transitions. [2020-11-28 07:24:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:24:02,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:24:02,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:24:02,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:24:02,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:24:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:24:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash -173996, now seen corresponding path program 1 times [2020-11-28 07:24:02,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:24:02,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644690140] [2020-11-28 07:24:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:24:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:24:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:24:02,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644690140] [2020-11-28 07:24:02,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:24:02,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:24:02,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064164336] [2020-11-28 07:24:02,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:24:02,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:24:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:24:02,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:24:02,537 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 4 states. [2020-11-28 07:24:02,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:24:02,629 INFO L93 Difference]: Finished difference Result 24 states and 37 transitions. [2020-11-28 07:24:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:24:02,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:24:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:24:02,632 INFO L225 Difference]: With dead ends: 24 [2020-11-28 07:24:02,632 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 07:24:02,633 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 [2020-11-28 07:24:02,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 07:24:02,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 07:24:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:24:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2020-11-28 07:24:02,642 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 11 [2020-11-28 07:24:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:24:02,644 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2020-11-28 07:24:02,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:24:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2020-11-28 07:24:02,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:24:02,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:24:02,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:24:02,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:24:02,647 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:24:02,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:24:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash -166849250, now seen corresponding path program 1 times [2020-11-28 07:24:02,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:24:02,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432281069] [2020-11-28 07:24:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:24:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:24:02,810 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:24:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:24:02,872 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:24:02,936 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:24:02,936 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:24:02,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:24:02,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:24:02 BoogieIcfgContainer [2020-11-28 07:24:02,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:24:02,994 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:24:02,994 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:24:02,994 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:24:02,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:24:01" (3/4) ... [2020-11-28 07:24:02,997 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:24:03,093 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ed4696b4-1f4f-4b2a-a77d-f87413d1e06a/bin/utaipan/witness.graphml [2020-11-28 07:24:03,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:24:03,096 INFO L168 Benchmark]: Toolchain (without parser) took 2355.79 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 74.0 MB in the beginning and 78.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:03,097 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:24:03,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.88 ms. Allocated memory is still 111.1 MB. Free memory was 73.7 MB in the beginning and 86.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:03,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.37 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 84.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:03,099 INFO L168 Benchmark]: Boogie Preprocessor took 31.30 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 82.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:03,100 INFO L168 Benchmark]: RCFGBuilder took 735.40 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 52.6 MB in the end (delta: 30.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:03,101 INFO L168 Benchmark]: TraceAbstraction took 1111.63 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 51.9 MB in the beginning and 81.8 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:24:03,101 INFO L168 Benchmark]: Witness Printer took 99.81 ms. Allocated memory is still 138.4 MB. Free memory was 81.8 MB in the beginning and 78.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:24:03,105 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 111.1 MB. Free memory is still 90.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.88 ms. Allocated memory is still 111.1 MB. Free memory was 73.7 MB in the beginning and 86.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.37 ms. Allocated memory is still 111.1 MB. Free memory was 86.0 MB in the beginning and 84.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.30 ms. Allocated memory is still 111.1 MB. Free memory was 84.0 MB in the beginning and 82.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 735.40 ms. Allocated memory is still 111.1 MB. Free memory was 82.9 MB in the beginning and 52.6 MB in the end (delta: 30.3 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1111.63 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 51.9 MB in the beginning and 81.8 MB in the end (delta: -29.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 99.81 ms. Allocated memory is still 138.4 MB. Free memory was 81.8 MB in the beginning and 78.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 0 [L34] i=0 VAL [N=1] [L34] COND TRUE i