./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3liff.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3liff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97475be9bfccf4dd577a5b4845abd7d13a4f25c3 ............................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-69874e2 [2020-12-01 14:53:52,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:53:52,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:53:53,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:53:53,092 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:53:53,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:53:53,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:53:53,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:53:53,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:53:53,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:53:53,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:53:53,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:53:53,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:53:53,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:53:53,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:53:53,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:53:53,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:53:53,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:53:53,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:53:53,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:53:53,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:53:53,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:53:53,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:53:53,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:53:53,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:53:53,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:53:53,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:53:53,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:53:53,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:53:53,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:53:53,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:53:53,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:53:53,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:53:53,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:53:53,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:53:53,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:53:53,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:53:53,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:53:53,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:53:53,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:53:53,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:53:53,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:53:53,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:53:53,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:53:53,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:53:53,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:53:53,280 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:53:53,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:53:53,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:53:53,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:53:53,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:53:53,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:53:53,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:53:53,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:53:53,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:53:53,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:53:53,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:53:53,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:53:53,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:53:53,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:53:53,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:53:53,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:53:53,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:53:53,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:53:53,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:53:53,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:53:53,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:53:53,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:53:53,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:53:53,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:53:53,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:53:53,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97475be9bfccf4dd577a5b4845abd7d13a4f25c3 [2020-12-01 14:53:53,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:53:53,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:53:53,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:53:53,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:53:53,658 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:53:53,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/../../sv-benchmarks/c/array-fpi/s3liff.c [2020-12-01 14:53:53,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/data/b9ce27f97/0c693ee5d1c34dccb7d8b06a95d979c4/FLAGfa2d1f0e7 [2020-12-01 14:53:54,336 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:53:54,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/sv-benchmarks/c/array-fpi/s3liff.c [2020-12-01 14:53:54,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/data/b9ce27f97/0c693ee5d1c34dccb7d8b06a95d979c4/FLAGfa2d1f0e7 [2020-12-01 14:53:54,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/data/b9ce27f97/0c693ee5d1c34dccb7d8b06a95d979c4 [2020-12-01 14:53:54,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:53:54,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:53:54,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:53:54,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:53:54,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:53:54,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:53:54" (1/1) ... [2020-12-01 14:53:54,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@367dc06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:54, skipping insertion in model container [2020-12-01 14:53:54,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:53:54" (1/1) ... [2020-12-01 14:53:54,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:53:54,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:53:54,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:53:54,966 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:53:54,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:53:55,011 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:53:55,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55 WrapperNode [2020-12-01 14:53:55,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:53:55,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:53:55,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:53:55,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:53:55,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:53:55,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:53:55,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:53:55,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:53:55,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... [2020-12-01 14:53:55,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:53:55,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:53:55,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:53:55,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:53:55,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/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 [2020-12-01 14:53:55,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:53:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:53:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 14:53:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-01 14:53:55,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:53:55,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:53:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 14:53:55,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 14:53:55,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:53:55,566 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-01 14:53:55,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:53:55 BoogieIcfgContainer [2020-12-01 14:53:55,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:53:55,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:53:55,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:53:55,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:53:55,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:53:54" (1/3) ... [2020-12-01 14:53:55,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649fb455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:53:55, skipping insertion in model container [2020-12-01 14:53:55,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:53:55" (2/3) ... [2020-12-01 14:53:55,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649fb455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:53:55, skipping insertion in model container [2020-12-01 14:53:55,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:53:55" (3/3) ... [2020-12-01 14:53:55,581 INFO L111 eAbstractionObserver]: Analyzing ICFG s3liff.c [2020-12-01 14:53:55,614 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:53:55,617 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:53:55,631 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:53:55,666 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:53:55,677 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:53:55,677 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:53:55,677 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:53:55,677 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:53:55,678 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:53:55,678 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:53:55,678 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:53:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-01 14:53:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:53:55,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:53:55,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:55,711 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:53:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2020-12-01 14:53:55,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:55,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462778220] [2020-12-01 14:53:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:53:55,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462778220] [2020-12-01 14:53:55,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:53:55,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 14:53:55,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387691504] [2020-12-01 14:53:55,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 14:53:55,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:53:55,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 14:53:55,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:53:55,926 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-01 14:53:55,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:53:55,947 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2020-12-01 14:53:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 14:53:55,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 14:53:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:53:55,956 INFO L225 Difference]: With dead ends: 41 [2020-12-01 14:53:55,956 INFO L226 Difference]: Without dead ends: 18 [2020-12-01 14:53:55,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 14:53:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-01 14:53:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-01 14:53:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 14:53:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-12-01 14:53:56,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2020-12-01 14:53:56,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:53:56,004 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-12-01 14:53:56,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 14:53:56,004 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-12-01 14:53:56,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 14:53:56,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:53:56,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:56,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:53:56,006 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:53:56,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:56,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2020-12-01 14:53:56,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:56,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114623322] [2020-12-01 14:53:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:53:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:53:56,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114623322] [2020-12-01 14:53:56,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:53:56,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:53:56,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333694194] [2020-12-01 14:53:56,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:53:56,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:53:56,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:53:56,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:53:56,115 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 4 states. [2020-12-01 14:53:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:53:56,246 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-12-01 14:53:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 14:53:56,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 14:53:56,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:53:56,250 INFO L225 Difference]: With dead ends: 36 [2020-12-01 14:53:56,250 INFO L226 Difference]: Without dead ends: 25 [2020-12-01 14:53:56,252 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 [2020-12-01 14:53:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-01 14:53:56,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2020-12-01 14:53:56,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-01 14:53:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-01 14:53:56,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2020-12-01 14:53:56,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:53:56,264 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-01 14:53:56,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:53:56,264 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-01 14:53:56,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-01 14:53:56,265 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:53:56,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:53:56,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:53:56,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:53:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:53:56,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2020-12-01 14:53:56,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:53:56,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508825598] [2020-12-01 14:53:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:53:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:56,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:53:56,460 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:53:56,513 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:53:56,514 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 14:53:56,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:53:56,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:53:56 BoogieIcfgContainer [2020-12-01 14:53:56,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:53:56,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:53:56,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:53:56,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:53:56,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:53:55" (3/4) ... [2020-12-01 14:53:56,570 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 14:53:56,636 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e4aaf072-f277-4463-932f-f7a4593b1d90/bin/uautomizer/witness.graphml [2020-12-01 14:53:56,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:53:56,639 INFO L168 Benchmark]: Toolchain (without parser) took 1972.72 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 68.5 MB in the beginning and 49.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 51.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,640 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 9.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:53:56,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.49 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 68.5 MB in the beginning and 107.2 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.15 ms. Allocated memory is still 130.0 MB. Free memory was 107.2 MB in the beginning and 105.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,643 INFO L168 Benchmark]: Boogie Preprocessor took 35.39 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,644 INFO L168 Benchmark]: RCFGBuilder took 452.64 ms. Allocated memory is still 130.0 MB. Free memory was 104.2 MB in the beginning and 88.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,645 INFO L168 Benchmark]: TraceAbstraction took 994.53 ms. Allocated memory is still 130.0 MB. Free memory was 88.3 MB in the beginning and 52.4 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,646 INFO L168 Benchmark]: Witness Printer took 70.27 ms. Allocated memory is still 130.0 MB. Free memory was 52.4 MB in the beginning and 49.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 14:53:56,651 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory was 53.8 MB in the beginning and 53.8 MB in the end (delta: 9.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.49 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 68.5 MB in the beginning and 107.2 MB in the end (delta: -38.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.15 ms. Allocated memory is still 130.0 MB. Free memory was 107.2 MB in the beginning and 105.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.39 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 452.64 ms. Allocated memory is still 130.0 MB. Free memory was 104.2 MB in the beginning and 88.9 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 994.53 ms. Allocated memory is still 130.0 MB. Free memory was 88.3 MB in the beginning and 52.4 MB in the end (delta: 35.9 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 70.27 ms. Allocated memory is still 130.0 MB. Free memory was 52.4 MB in the beginning and 49.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 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; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [N=1] [L32] COND TRUE i