./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/brs5f.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_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/brs5f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/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 b1651a3e04bf6297882c1da956f8faee3eaf40c9 .................................................................................................................................................................................................................................................................................................................................................. 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 02:58:30,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:58:30,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:58:30,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:58:30,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:58:30,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:58:30,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:58:30,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:58:30,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:58:30,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:58:30,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:58:30,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:58:30,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:58:30,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:58:30,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:58:30,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:58:30,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:58:30,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:58:30,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:58:30,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:58:30,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:58:30,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:58:30,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:58:30,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:58:30,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:58:30,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:58:30,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:58:30,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:58:30,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:58:30,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:58:30,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:58:30,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:58:30,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:58:30,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:58:30,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:58:30,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:58:30,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:58:30,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:58:30,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:58:30,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:58:30,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:58:30,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:58:30,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:58:30,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:58:30,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:58:30,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:58:30,534 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:58:30,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:58:30,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:58:30,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:58:30,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:58:30,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:58:30,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:58:30,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:58:30,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:58:30,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:58:30,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:58:30,538 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:58:30,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:58:30,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:58:30,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:58:30,539 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:58:30,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:58:30,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:58:30,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:58:30,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:58:30,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:58:30,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:58:30,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:58:30,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:58:30,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:58:30,541 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_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1651a3e04bf6297882c1da956f8faee3eaf40c9 [2020-11-28 02:58:30,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:58:30,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:58:30,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:58:30,863 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:58:30,864 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:58:30,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/../../sv-benchmarks/c/array-fpi/brs5f.c [2020-11-28 02:58:30,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/data/bb4fa0c56/f91e6ff85d2745c385af0cb1948773d9/FLAGbb269520d [2020-11-28 02:58:31,421 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:58:31,421 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/sv-benchmarks/c/array-fpi/brs5f.c [2020-11-28 02:58:31,427 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/data/bb4fa0c56/f91e6ff85d2745c385af0cb1948773d9/FLAGbb269520d [2020-11-28 02:58:31,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/data/bb4fa0c56/f91e6ff85d2745c385af0cb1948773d9 [2020-11-28 02:58:31,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:58:31,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:58:31,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:31,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:58:31,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:58:31,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:31" (1/1) ... [2020-11-28 02:58:31,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e29271f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:31, skipping insertion in model container [2020-11-28 02:58:31,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:31" (1/1) ... [2020-11-28 02:58:31,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:58:31,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:58:32,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:32,057 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:58:32,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:58:32,088 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:58:32,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32 WrapperNode [2020-11-28 02:58:32,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:58:32,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:32,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:58:32,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:58:32,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:58:32,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:58:32,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:58:32,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:58:32,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... [2020-11-28 02:58:32,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:58:32,163 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:58:32,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:58:32,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:58:32,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/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 [2020-11-28 02:58:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:58:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:58:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:58:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-28 02:58:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:58:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:58:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:58:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:58:32,571 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:58:32,572 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-28 02:58:32,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:32 BoogieIcfgContainer [2020-11-28 02:58:32,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:58:32,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:58:32,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:58:32,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:58:32,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:58:31" (1/3) ... [2020-11-28 02:58:32,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f1a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:32, skipping insertion in model container [2020-11-28 02:58:32,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:32" (2/3) ... [2020-11-28 02:58:32,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f1a59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:58:32, skipping insertion in model container [2020-11-28 02:58:32,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:32" (3/3) ... [2020-11-28 02:58:32,609 INFO L111 eAbstractionObserver]: Analyzing ICFG brs5f.c [2020-11-28 02:58:32,619 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:58:32,623 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:58:32,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:58:32,656 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:58:32,656 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:58:32,656 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:58:32,656 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:58:32,656 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:58:32,657 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:58:32,657 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:58:32,657 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:58:32,669 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 02:58:32,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:32,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:32,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:32,674 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:32,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:32,678 INFO L82 PathProgramCache]: Analyzing trace with hash 361760665, now seen corresponding path program 1 times [2020-11-28 02:58:32,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:32,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471589672] [2020-11-28 02:58:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:32,829 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 02:58:32,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471589672] [2020-11-28 02:58:32,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:32,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:58:32,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332950466] [2020-11-28 02:58:32,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:58:32,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:32,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:58:32,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:58:32,854 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 02:58:32,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:32,870 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2020-11-28 02:58:32,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:58:32,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 02:58:32,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:32,881 INFO L225 Difference]: With dead ends: 37 [2020-11-28 02:58:32,881 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 02:58:32,884 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 [2020-11-28 02:58:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 02:58:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 02:58:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 02:58:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-28 02:58:32,918 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-11-28 02:58:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:32,919 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-28 02:58:32,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:58:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-28 02:58:32,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:58:32,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:32,920 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:32,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:58:32,921 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:32,922 INFO L82 PathProgramCache]: Analyzing trace with hash -447913662, now seen corresponding path program 1 times [2020-11-28 02:58:32,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:32,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586494380] [2020-11-28 02:58:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:58:33,043 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 02:58:33,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586494380] [2020-11-28 02:58:33,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:58:33,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:58:33,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879511878] [2020-11-28 02:58:33,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:58:33,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:58:33,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:58:33,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:58:33,048 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 4 states. [2020-11-28 02:58:33,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:58:33,144 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2020-11-28 02:58:33,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:58:33,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:58:33,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:58:33,146 INFO L225 Difference]: With dead ends: 33 [2020-11-28 02:58:33,146 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 02:58:33,147 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 02:58:33,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 02:58:33,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2020-11-28 02:58:33,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 02:58:33,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 02:58:33,153 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-11-28 02:58:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:58:33,153 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 02:58:33,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:58:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 02:58:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 02:58:33,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:58:33,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:58:33,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:58:33,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:58:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:58:33,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1044113915, now seen corresponding path program 1 times [2020-11-28 02:58:33,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:58:33,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496940641] [2020-11-28 02:58:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:58:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:33,213 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:58:33,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:58:33,297 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:58:33,297 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:58:33,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 02:58:33,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:58:33 BoogieIcfgContainer [2020-11-28 02:58:33,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:58:33,332 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:58:33,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:58:33,333 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:58:33,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:32" (3/4) ... [2020-11-28 02:58:33,335 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:58:33,385 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fb001986-2a48-41dd-8d18-7bdf44e8a2fb/bin/uautomizer/witness.graphml [2020-11-28 02:58:33,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:58:33,388 INFO L168 Benchmark]: Toolchain (without parser) took 1579.21 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 47.8 MB in the beginning and 46.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,388 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:58:33,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.49 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 56.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.00 ms. Allocated memory is still 79.7 MB. Free memory was 56.3 MB in the beginning and 54.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,390 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 ms. Allocated memory is still 79.7 MB. Free memory was 54.8 MB in the beginning and 53.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,391 INFO L168 Benchmark]: RCFGBuilder took 410.94 ms. Allocated memory is still 79.7 MB. Free memory was 53.6 MB in the beginning and 39.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,392 INFO L168 Benchmark]: TraceAbstraction took 745.90 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 38.9 MB in the beginning and 49.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,393 INFO L168 Benchmark]: Witness Printer took 53.57 ms. Allocated memory is still 96.5 MB. Free memory was 49.3 MB in the beginning and 46.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:58:33,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 79.7 MB. Free memory was 39.2 MB in the beginning and 39.1 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.49 ms. Allocated memory is still 79.7 MB. Free memory was 47.7 MB in the beginning and 56.6 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.00 ms. Allocated memory is still 79.7 MB. Free memory was 56.3 MB in the beginning and 54.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.83 ms. Allocated memory is still 79.7 MB. Free memory was 54.8 MB in the beginning and 53.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.94 ms. Allocated memory is still 79.7 MB. Free memory was 53.6 MB in the beginning and 39.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 745.90 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 38.9 MB in the beginning and 49.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Witness Printer took 53.57 ms. Allocated memory is still 96.5 MB. Free memory was 49.3 MB in the beginning and 46.8 MB in the end (delta: 2.6 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; 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] i=0 VAL [N=1] [L31] COND TRUE i