./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss4f.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_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss4f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/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 25c195ba8f45bf926b5797f815caf7c64c26ab87 ........................................................................................................................................................................................................................................................................................................................................................................... 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 23:36:00,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:36:00,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:36:01,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:36:01,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:36:01,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:36:01,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:36:01,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:36:01,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:36:01,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:36:01,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:36:01,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:36:01,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:36:01,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:36:01,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:36:01,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:36:01,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:36:01,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:36:01,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:36:01,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:36:01,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:36:01,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:36:01,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:36:01,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:36:01,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:36:01,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:36:01,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:36:01,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:36:01,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:36:01,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:36:01,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:36:01,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:36:01,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:36:01,136 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:36:01,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:36:01,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:36:01,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:36:01,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:36:01,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:36:01,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:36:01,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:36:01,144 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:36:01,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:36:01,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:36:01,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:36:01,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:36:01,186 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:36:01,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:36:01,186 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:36:01,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:36:01,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:36:01,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:36:01,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:36:01,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:36:01,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:36:01,188 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:36:01,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:36:01,189 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:36:01,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:36:01,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:36:01,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:36:01,190 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:36:01,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:36:01,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:36:01,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:36:01,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:36:01,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:36:01,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:36:01,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:36:01,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:36:01,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:36:01,192 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_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25c195ba8f45bf926b5797f815caf7c64c26ab87 [2020-11-29 23:36:01,472 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:36:01,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:36:01,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:36:01,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:36:01,502 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:36:01,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ss4f.c [2020-11-29 23:36:01,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/data/fcd62e493/501a35393d87402b86116b1731bba406/FLAG499a1c35b [2020-11-29 23:36:02,030 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:36:02,031 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/sv-benchmarks/c/array-fpi/ss4f.c [2020-11-29 23:36:02,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/data/fcd62e493/501a35393d87402b86116b1731bba406/FLAG499a1c35b [2020-11-29 23:36:02,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/data/fcd62e493/501a35393d87402b86116b1731bba406 [2020-11-29 23:36:02,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:36:02,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:36:02,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:36:02,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:36:02,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:36:02,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281e87d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02, skipping insertion in model container [2020-11-29 23:36:02,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:36:02,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:36:02,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:36:02,270 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:36:02,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:36:02,339 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:36:02,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02 WrapperNode [2020-11-29 23:36:02,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:36:02,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:36:02,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:36:02,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:36:02,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:36:02,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:36:02,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:36:02,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:36:02,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... [2020-11-29 23:36:02,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:36:02,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:36:02,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:36:02,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:36:02,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/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 23:36:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:36:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:36:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:36:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:36:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:36:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:36:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:36:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:36:02,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:36:02,899 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-29 23:36:02,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:02 BoogieIcfgContainer [2020-11-29 23:36:02,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:36:02,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:36:02,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:36:02,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:36:02,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:36:02" (1/3) ... [2020-11-29 23:36:02,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b1fe47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:36:02, skipping insertion in model container [2020-11-29 23:36:02,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:36:02" (2/3) ... [2020-11-29 23:36:02,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b1fe47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:36:02, skipping insertion in model container [2020-11-29 23:36:02,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:02" (3/3) ... [2020-11-29 23:36:02,917 INFO L111 eAbstractionObserver]: Analyzing ICFG ss4f.c [2020-11-29 23:36:02,928 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:36:02,933 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:36:02,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:36:02,989 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:36:02,989 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:36:02,989 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:36:02,989 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:36:02,989 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:36:02,989 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:36:02,989 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:36:02,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:36:03,005 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-11-29 23:36:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:36:03,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:03,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:03,013 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:03,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2020-11-29 23:36:03,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:03,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721695376] [2020-11-29 23:36:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:36:03,266 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 23:36:03,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721695376] [2020-11-29 23:36:03,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:36:03,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:36:03,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425369953] [2020-11-29 23:36:03,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:36:03,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:03,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:36:03,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:36:03,294 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-11-29 23:36:03,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:03,333 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-11-29 23:36:03,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:36:03,334 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-11-29 23:36:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:03,343 INFO L225 Difference]: With dead ends: 45 [2020-11-29 23:36:03,343 INFO L226 Difference]: Without dead ends: 20 [2020-11-29 23:36:03,349 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 23:36:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-29 23:36:03,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-29 23:36:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 23:36:03,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-29 23:36:03,413 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2020-11-29 23:36:03,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:03,413 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-29 23:36:03,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:36:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-29 23:36:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:36:03,414 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:03,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:36:03,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:36:03,415 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:03,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:03,416 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2020-11-29 23:36:03,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:03,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793764905] [2020-11-29 23:36:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:36:03,542 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 23:36:03,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793764905] [2020-11-29 23:36:03,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:36:03,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:36:03,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247622419] [2020-11-29 23:36:03,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:36:03,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:36:03,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:36:03,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:36:03,546 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-11-29 23:36:03,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:36:03,695 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-11-29 23:36:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:36:03,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 23:36:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:36:03,698 INFO L225 Difference]: With dead ends: 41 [2020-11-29 23:36:03,698 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 23:36:03,699 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 23:36:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 23:36:03,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-11-29 23:36:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:36:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-29 23:36:03,710 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-11-29 23:36:03,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:36:03,712 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-29 23:36:03,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:36:03,712 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-29 23:36:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 23:36:03,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:36:03,714 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] [2020-11-29 23:36:03,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:36:03,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:36:03,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:36:03,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2020-11-29 23:36:03,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:36:03,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921724368] [2020-11-29 23:36:03,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:36:03,780 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:36:03,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112256765] [2020-11-29 23:36:03,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:36:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:03,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:36:03,941 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:36:03,974 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:36:03,974 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:36:04,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 23:36:04,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:36:04 BoogieIcfgContainer [2020-11-29 23:36:04,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:36:04,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:36:04,225 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:36:04,225 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:36:04,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:36:02" (3/4) ... [2020-11-29 23:36:04,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:36:04,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9eeb7b7d-1ce8-4143-8de9-7a122470a0a4/bin/uautomizer/witness.graphml [2020-11-29 23:36:04,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:36:04,310 INFO L168 Benchmark]: Toolchain (without parser) took 2251.62 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.3 MB in the beginning and 83.5 MB in the end (delta: -29.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,311 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 58.7 MB in the beginning and 58.7 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:36:04,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.27 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 63.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,312 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.28 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 61.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,312 INFO L168 Benchmark]: Boogie Preprocessor took 40.93 ms. Allocated memory is still 86.0 MB. Free memory was 61.9 MB in the beginning and 60.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,313 INFO L168 Benchmark]: RCFGBuilder took 454.81 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 44.7 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,314 INFO L168 Benchmark]: TraceAbstraction took 1322.23 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 48.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,314 INFO L168 Benchmark]: Witness Printer took 82.81 ms. Allocated memory is still 104.9 MB. Free memory was 48.7 MB in the beginning and 83.5 MB in the end (delta: -34.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:36:04,318 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 86.0 MB. Free memory was 58.7 MB in the beginning and 58.7 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.27 ms. Allocated memory is still 86.0 MB. Free memory was 54.1 MB in the beginning and 63.6 MB in the end (delta: -9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.28 ms. Allocated memory is still 86.0 MB. Free memory was 63.6 MB in the beginning and 61.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.93 ms. Allocated memory is still 86.0 MB. Free memory was 61.9 MB in the beginning and 60.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 454.81 ms. Allocated memory is still 86.0 MB. Free memory was 60.5 MB in the beginning and 44.7 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1322.23 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 44.5 MB in the beginning and 48.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Witness Printer took 82.81 ms. Allocated memory is still 104.9 MB. Free memory was 48.7 MB in the beginning and 83.5 MB in the end (delta: -34.7 MB). Peak memory consumption was 6.5 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i