./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2f.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_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/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 d4908701bc858db819ac584f6da9ed504c4033b1 ........................................................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-30 01:16:13,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:16:13,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:16:13,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:16:13,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:16:13,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:16:13,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:16:13,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:16:13,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:16:13,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:16:13,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:16:13,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:16:13,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:16:13,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:16:13,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:16:13,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:16:13,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:16:13,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:16:13,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:16:13,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:16:13,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:16:13,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:16:13,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:16:13,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:16:13,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:16:13,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:16:13,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:16:13,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:16:13,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:16:13,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:16:13,357 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:16:13,358 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:16:13,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:16:13,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:16:13,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:16:13,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:16:13,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:16:13,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:16:13,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:16:13,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:16:13,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:16:13,371 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:16:13,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:16:13,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:16:13,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:16:13,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:16:13,417 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:16:13,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:16:13,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:16:13,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:16:13,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:16:13,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:16:13,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:16:13,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:16:13,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:16:13,420 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:16:13,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:16:13,420 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:16:13,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:16:13,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:16:13,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:16:13,421 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:16:13,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:16:13,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:16:13,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:16:13,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:16:13,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:16:13,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:16:13,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:16:13,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:16:13,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:16:13,424 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_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4908701bc858db819ac584f6da9ed504c4033b1 [2020-11-30 01:16:13,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:16:13,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:16:13,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:16:13,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:16:13,760 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:16:13,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/../../sv-benchmarks/c/array-fpi/res2f.c [2020-11-30 01:16:13,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/data/2a3651964/ba9e143dd5b24a7cb25b4af7998f8885/FLAG5ef64c35a [2020-11-30 01:16:14,498 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:16:14,502 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/sv-benchmarks/c/array-fpi/res2f.c [2020-11-30 01:16:14,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/data/2a3651964/ba9e143dd5b24a7cb25b4af7998f8885/FLAG5ef64c35a [2020-11-30 01:16:14,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/data/2a3651964/ba9e143dd5b24a7cb25b4af7998f8885 [2020-11-30 01:16:14,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:16:14,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:16:14,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:14,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:16:14,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:16:14,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:14" (1/1) ... [2020-11-30 01:16:14,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@201bbfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:14, skipping insertion in model container [2020-11-30 01:16:14,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:16:14" (1/1) ... [2020-11-30 01:16:14,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:16:14,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:16:15,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:15,134 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:16:15,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:16:15,177 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:16:15,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15 WrapperNode [2020-11-30 01:16:15,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:16:15,180 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:15,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:16:15,180 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:16:15,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:16:15,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:16:15,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:16:15,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:16:15,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... [2020-11-30 01:16:15,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:16:15,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:16:15,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:16:15,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:16:15,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/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 [2020-11-30 01:16:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:16:15,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:16:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:16:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 01:16:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:16:15,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:16:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:16:15,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:16:15,908 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:16:15,909 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 01:16:15,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:15 BoogieIcfgContainer [2020-11-30 01:16:15,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:16:15,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:16:15,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:16:15,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:16:15,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:16:14" (1/3) ... [2020-11-30 01:16:15,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638021cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:15, skipping insertion in model container [2020-11-30 01:16:15,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:16:15" (2/3) ... [2020-11-30 01:16:15,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@638021cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:16:15, skipping insertion in model container [2020-11-30 01:16:15,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:15" (3/3) ... [2020-11-30 01:16:15,921 INFO L111 eAbstractionObserver]: Analyzing ICFG res2f.c [2020-11-30 01:16:15,934 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:16:15,939 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:16:15,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:16:15,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:16:15,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:16:15,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:16:15,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:16:15,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:16:15,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:16:15,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:16:15,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:16:15,993 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-30 01:16:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:16:16,000 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:16,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:16,002 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:16,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:16,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2020-11-30 01:16:16,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:16,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968415302] [2020-11-30 01:16:16,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:16,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968415302] [2020-11-30 01:16:16,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:16,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:16:16,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481298435] [2020-11-30 01:16:16,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:16:16,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:16,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:16:16,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:16:16,219 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-30 01:16:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:16,247 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2020-11-30 01:16:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:16:16,249 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-11-30 01:16:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:16,261 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:16:16,262 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:16:16,277 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 [2020-11-30 01:16:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:16:16,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:16:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:16:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-11-30 01:16:16,332 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2020-11-30 01:16:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:16,333 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-11-30 01:16:16,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:16:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-11-30 01:16:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:16:16,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:16,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:16,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:16:16,337 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:16,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:16,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2020-11-30 01:16:16,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:16,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940516774] [2020-11-30 01:16:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:16,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940516774] [2020-11-30 01:16:16,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:16,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:16:16,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078783526] [2020-11-30 01:16:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:16:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:16:16,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:16:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:16:16,534 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 4 states. [2020-11-30 01:16:16,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:16,765 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2020-11-30 01:16:16,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:16:16,766 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-30 01:16:16,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:16,768 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:16:16,768 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 01:16:16,769 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 [2020-11-30 01:16:16,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 01:16:16,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-11-30 01:16:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 01:16:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-11-30 01:16:16,786 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2020-11-30 01:16:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:16,786 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-11-30 01:16:16,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:16:16,787 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-11-30 01:16:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 01:16:16,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:16,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:16,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:16:16,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:16,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2020-11-30 01:16:16,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:16:16,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709459496] [2020-11-30 01:16:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:16:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:16,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:16:17,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:16:17,117 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:16:17,118 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:16:17,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:16:17,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:16:17 BoogieIcfgContainer [2020-11-30 01:16:17,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:16:17,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:16:17,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:16:17,217 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:16:17,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:16:15" (3/4) ... [2020-11-30 01:16:17,223 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:16:17,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b53d1e25-1a5c-4f66-a627-e0d9bd00f2ad/bin/uautomizer/witness.graphml [2020-11-30 01:16:17,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:16:17,306 INFO L168 Benchmark]: Toolchain (without parser) took 2460.71 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 75.4 MB in the beginning and 95.4 MB in the end (delta: -20.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:17,306 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 85.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:17,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.59 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 85.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:17,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.44 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 83.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:17,308 INFO L168 Benchmark]: Boogie Preprocessor took 39.72 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 81.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:17,309 INFO L168 Benchmark]: RCFGBuilder took 640.87 ms. Allocated memory is still 111.1 MB. Free memory was 81.9 MB in the beginning and 64.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:17,309 INFO L168 Benchmark]: TraceAbstraction took 1303.28 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 63.6 MB in the beginning and 98.8 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:16:17,310 INFO L168 Benchmark]: Witness Printer took 86.89 ms. Allocated memory is still 142.6 MB. Free memory was 98.8 MB in the beginning and 95.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:16:17,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 85.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 332.59 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 85.4 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.44 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 83.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.72 ms. Allocated memory is still 111.1 MB. Free memory was 83.4 MB in the beginning and 81.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 640.87 ms. Allocated memory is still 111.1 MB. Free memory was 81.9 MB in the beginning and 64.5 MB in the end (delta: 17.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1303.28 ms. Allocated memory was 111.1 MB in the beginning and 142.6 MB in the end (delta: 31.5 MB). Free memory was 63.6 MB in the beginning and 98.8 MB in the end (delta: -35.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 86.89 ms. Allocated memory is still 142.6 MB. Free memory was 98.8 MB in the beginning and 95.4 MB in the end (delta: 3.4 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); [L30] int *b = malloc(sizeof(int)*N); [L31] int *c = malloc(sizeof(int)*N); [L33] sum[0] = 1 [L34] i=0 VAL [N=1] [L34] COND TRUE i