./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms5f.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_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ms5f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/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 8fbcf0ae323fdb88d34a8135350bf54a7d5fdc85 ................................................................................................................................................................................................................................................................................................................................................ 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 [2020-11-29 18:32:17,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:32:17,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:32:17,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:32:17,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:32:17,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:32:17,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:32:17,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:32:17,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:32:17,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:32:17,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:32:17,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:32:17,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:32:17,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:32:17,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:32:17,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:32:17,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:32:17,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:32:17,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:32:17,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:32:17,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:32:17,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:32:17,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:32:17,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:32:17,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:32:17,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:32:17,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:32:17,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:32:17,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:32:17,838 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:32:17,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:32:17,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:32:17,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:32:17,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:32:17,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:32:17,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:32:17,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:32:17,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:32:17,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:32:17,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:32:17,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:32:17,854 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:32:17,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:32:17,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:32:17,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:32:17,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:32:17,914 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:32:17,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:32:17,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:32:17,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:32:17,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:32:17,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:32:17,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:32:17,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:32:17,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:32:17,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:32:17,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:32:17,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:32:17,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:32:17,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:32:17,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:32:17,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:32:17,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:32:17,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:32:17,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:32:17,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:32:17,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:32:17,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:32:17,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:32:17,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:32:17,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:32:17,928 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_97aa3ba9-1d1f-42d5-9b24-34133cff65af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fbcf0ae323fdb88d34a8135350bf54a7d5fdc85 [2020-11-29 18:32:18,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:32:18,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:32:18,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:32:18,267 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:32:18,269 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:32:18,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ms5f.c [2020-11-29 18:32:18,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/data/5dba965da/ebe6d0cb25c44f19afe4daafa86e19aa/FLAG58b5c6775 [2020-11-29 18:32:18,974 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:32:18,975 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/sv-benchmarks/c/array-fpi/ms5f.c [2020-11-29 18:32:18,992 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/data/5dba965da/ebe6d0cb25c44f19afe4daafa86e19aa/FLAG58b5c6775 [2020-11-29 18:32:19,328 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/data/5dba965da/ebe6d0cb25c44f19afe4daafa86e19aa [2020-11-29 18:32:19,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:32:19,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:32:19,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:32:19,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:32:19,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:32:19,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f81d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19, skipping insertion in model container [2020-11-29 18:32:19,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:32:19,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:32:19,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:32:19,623 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:32:19,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:32:19,666 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:32:19,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19 WrapperNode [2020-11-29 18:32:19,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:32:19,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:32:19,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:32:19,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:32:19,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:32:19,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:32:19,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:32:19,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:32:19,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... [2020-11-29 18:32:19,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:32:19,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:32:19,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:32:19,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:32:19,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/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 [2020-11-29 18:32:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:32:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:32:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:32:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 18:32:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:32:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:32:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:32:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:32:20,177 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:32:20,178 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-29 18:32:20,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:32:20 BoogieIcfgContainer [2020-11-29 18:32:20,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:32:20,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:32:20,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:32:20,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:32:20,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:32:19" (1/3) ... [2020-11-29 18:32:20,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f097f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:32:20, skipping insertion in model container [2020-11-29 18:32:20,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:32:19" (2/3) ... [2020-11-29 18:32:20,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f097f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:32:20, skipping insertion in model container [2020-11-29 18:32:20,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:32:20" (3/3) ... [2020-11-29 18:32:20,207 INFO L111 eAbstractionObserver]: Analyzing ICFG ms5f.c [2020-11-29 18:32:20,217 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:32:20,220 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:32:20,232 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:32:20,258 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:32:20,258 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:32:20,258 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:32:20,258 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:32:20,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:32:20,259 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:32:20,259 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:32:20,259 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:32:20,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-29 18:32:20,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:32:20,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:20,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:32:20,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:32:20,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:20,290 INFO L82 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2020-11-29 18:32:20,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:20,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199690841] [2020-11-29 18:32:20,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:20,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199690841] [2020-11-29 18:32:20,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:32:20,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:32:20,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867627191] [2020-11-29 18:32:20,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:32:20,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:20,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:32:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:32:20,599 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-11-29 18:32:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:20,622 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-29 18:32:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:32:20,623 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 18:32:20,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:20,635 INFO L225 Difference]: With dead ends: 35 [2020-11-29 18:32:20,635 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 18:32:20,650 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 [2020-11-29 18:32:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 18:32:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 18:32:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 18:32:20,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-29 18:32:20,684 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2020-11-29 18:32:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:20,684 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-29 18:32:20,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:32:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-29 18:32:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:32:20,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:20,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:32:20,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:32:20,686 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:32:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:20,688 INFO L82 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2020-11-29 18:32:20,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:20,688 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777051] [2020-11-29 18:32:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:32:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:32:20,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777051] [2020-11-29 18:32:20,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:32:20,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:32:20,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008645188] [2020-11-29 18:32:20,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:32:20,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:32:20,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:32:20,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:32:20,859 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 4 states. [2020-11-29 18:32:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:32:20,984 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-11-29 18:32:20,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:32:20,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 18:32:20,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:32:20,986 INFO L225 Difference]: With dead ends: 28 [2020-11-29 18:32:20,987 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 18:32:20,988 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 [2020-11-29 18:32:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 18:32:20,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-11-29 18:32:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-29 18:32:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-29 18:32:20,993 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2020-11-29 18:32:20,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:32:20,993 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-29 18:32:20,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:32:20,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-29 18:32:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:32:20,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:32:20,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:32:20,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:32:20,995 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:32:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:32:20,995 INFO L82 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2020-11-29 18:32:20,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:32:20,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221445003] [2020-11-29 18:32:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:32:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:32:21,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:32:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:32:21,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:32:21,181 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:32:21,181 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:32:21,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:32:21,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:32:21 BoogieIcfgContainer [2020-11-29 18:32:21,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:32:21,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:32:21,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:32:21,218 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:32:21,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:32:20" (3/4) ... [2020-11-29 18:32:21,220 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:32:21,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_97aa3ba9-1d1f-42d5-9b24-34133cff65af/bin/uautomizer/witness.graphml [2020-11-29 18:32:21,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:32:21,275 INFO L168 Benchmark]: Toolchain (without parser) took 1939.82 ms. Allocated memory is still 127.9 MB. Free memory was 99.7 MB in the beginning and 97.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 1.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:32:21,275 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:32:21,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.85 ms. Allocated memory is still 127.9 MB. Free memory was 99.7 MB in the beginning and 104.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:32:21,277 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.56 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 103.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:32:21,277 INFO L168 Benchmark]: Boogie Preprocessor took 38.70 ms. Allocated memory is still 127.9 MB. Free memory was 103.1 MB in the beginning and 101.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:32:21,278 INFO L168 Benchmark]: RCFGBuilder took 425.74 ms. Allocated memory is still 127.9 MB. Free memory was 101.9 MB in the beginning and 87.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:32:21,279 INFO L168 Benchmark]: TraceAbstraction took 1016.03 ms. Allocated memory is still 127.9 MB. Free memory was 87.2 MB in the beginning and 99.0 MB in the end (delta: -11.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:32:21,279 INFO L168 Benchmark]: Witness Printer took 59.19 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 97.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:32:21,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.85 ms. Allocated memory is still 127.9 MB. Free memory was 99.7 MB in the beginning and 104.7 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.56 ms. Allocated memory is still 127.9 MB. Free memory was 104.7 MB in the beginning and 103.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.70 ms. Allocated memory is still 127.9 MB. Free memory was 103.1 MB in the beginning and 101.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 425.74 ms. Allocated memory is still 127.9 MB. Free memory was 101.9 MB in the beginning and 87.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1016.03 ms. Allocated memory is still 127.9 MB. Free memory was 87.2 MB in the beginning and 99.0 MB in the end (delta: -11.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 59.19 ms. Allocated memory is still 127.9 MB. Free memory was 99.0 MB in the beginning and 97.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 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