./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss2f.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_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ss2f.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/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 140b2ee674786865605f3bb0db5e22e6fcce8eed ................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:13:11,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:13:11,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:13:11,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:13:11,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:13:11,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:13:11,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:13:11,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:13:11,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:13:11,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:13:11,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:13:11,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:13:11,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:13:11,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:13:11,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:13:11,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:13:11,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:13:11,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:13:11,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:13:11,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:13:11,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:13:11,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:13:11,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:13:11,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:13:11,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:13:11,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:13:11,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:13:11,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:13:11,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:13:11,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:13:11,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:13:11,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:13:11,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:13:11,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:13:11,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:13:11,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:13:11,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:13:11,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:13:11,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:13:11,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:13:11,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:13:11,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:13:11,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:13:11,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:13:11,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:13:11,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:13:11,638 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:13:11,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:13:11,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:13:11,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:13:11,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:13:11,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:13:11,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:13:11,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:13:11,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:13:11,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:13:11,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:13:11,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:13:11,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:13:11,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:13:11,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:13:11,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:13:11,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:13:11,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:13:11,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:13:11,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:13:11,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:13:11,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:13:11,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:13:11,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:13:11,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:13:11,645 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_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 140b2ee674786865605f3bb0db5e22e6fcce8eed [2020-11-29 23:13:11,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:13:11,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:13:11,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:13:11,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:13:11,953 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:13:11,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/../../sv-benchmarks/c/array-fpi/ss2f.c [2020-11-29 23:13:12,049 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/data/3d5aadfe3/0cc4d7f73c7c43b39164a1c411f470d6/FLAG97d309818 [2020-11-29 23:13:12,470 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:13:12,471 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/sv-benchmarks/c/array-fpi/ss2f.c [2020-11-29 23:13:12,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/data/3d5aadfe3/0cc4d7f73c7c43b39164a1c411f470d6/FLAG97d309818 [2020-11-29 23:13:12,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/data/3d5aadfe3/0cc4d7f73c7c43b39164a1c411f470d6 [2020-11-29 23:13:12,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:13:12,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:13:12,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:12,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:13:12,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:13:12,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:12" (1/1) ... [2020-11-29 23:13:12,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f68754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:12, skipping insertion in model container [2020-11-29 23:13:12,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:13:12" (1/1) ... [2020-11-29 23:13:12,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:13:12,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:13:13,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:13,158 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:13:13,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:13:13,218 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:13:13,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13 WrapperNode [2020-11-29 23:13:13,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:13:13,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:13,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:13:13,222 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:13:13,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:13:13,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:13:13,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:13:13,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:13:13,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... [2020-11-29 23:13:13,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:13:13,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:13:13,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:13:13,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:13:13,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/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 23:13:13,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:13:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:13:13,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:13:13,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:13:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:13:13,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:13:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:13:13,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:13:13,862 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:13:13,862 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-29 23:13:13,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:13 BoogieIcfgContainer [2020-11-29 23:13:13,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:13:13,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:13:13,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:13:13,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:13:13,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:13:12" (1/3) ... [2020-11-29 23:13:13,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef78e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:13:13, skipping insertion in model container [2020-11-29 23:13:13,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:13:13" (2/3) ... [2020-11-29 23:13:13,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef78e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:13:13, skipping insertion in model container [2020-11-29 23:13:13,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:13" (3/3) ... [2020-11-29 23:13:13,873 INFO L111 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-11-29 23:13:13,884 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:13:13,888 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:13:13,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:13:13,933 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:13:13,933 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:13:13,933 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:13:13,933 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:13:13,934 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:13:13,934 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:13:13,934 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:13:13,934 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:13:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-29 23:13:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:13:13,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:13,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:13,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:13:13,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:13,961 INFO L82 PathProgramCache]: Analyzing trace with hash -642180410, now seen corresponding path program 1 times [2020-11-29 23:13:13,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:13,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175784584] [2020-11-29 23:13:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:14,127 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 23:13:14,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175784584] [2020-11-29 23:13:14,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:14,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:13:14,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648062541] [2020-11-29 23:13:14,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:13:14,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:14,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:13:14,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:13:14,165 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-11-29 23:13:14,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:14,188 INFO L93 Difference]: Finished difference Result 63 states and 93 transitions. [2020-11-29 23:13:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:13:14,190 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2020-11-29 23:13:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:13:14,200 INFO L225 Difference]: With dead ends: 63 [2020-11-29 23:13:14,201 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 23:13:14,206 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 23:13:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 23:13:14,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 23:13:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 23:13:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-11-29 23:13:14,270 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 20 [2020-11-29 23:13:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:13:14,270 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-11-29 23:13:14,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:13:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-11-29 23:13:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:13:14,272 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:14,272 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:14,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:13:14,273 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:13:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:14,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1011332042, now seen corresponding path program 1 times [2020-11-29 23:13:14,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:14,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848882552] [2020-11-29 23:13:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:13:14,406 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 23:13:14,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848882552] [2020-11-29 23:13:14,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:13:14,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:13:14,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825256072] [2020-11-29 23:13:14,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:13:14,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:13:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:13:14,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:13:14,410 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 4 states. [2020-11-29 23:13:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:13:14,584 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2020-11-29 23:13:14,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:13:14,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-29 23:13:14,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:13:14,586 INFO L225 Difference]: With dead ends: 69 [2020-11-29 23:13:14,586 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:13:14,587 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 23:13:14,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:13:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-29 23:13:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 23:13:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-11-29 23:13:14,602 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 20 [2020-11-29 23:13:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:13:14,603 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-11-29 23:13:14,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:13:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-11-29 23:13:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:13:14,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:13:14,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:13:14,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:13:14,609 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:13:14,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:13:14,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1890076394, now seen corresponding path program 1 times [2020-11-29 23:13:14,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:13:14,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878853887] [2020-11-29 23:13:14,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:13:14,686 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:13:14,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846531784] [2020-11-29 23:13:14,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/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 23:13:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:14,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:13:14,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:13:14,961 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:13:14,962 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:13:15,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 23:13:15,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:13:15 BoogieIcfgContainer [2020-11-29 23:13:15,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:13:15,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:13:15,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:13:15,237 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:13:15,238 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:13:13" (3/4) ... [2020-11-29 23:13:15,240 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:13:15,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f34e4d94-6dba-4fef-9b2c-f2e6bf680f02/bin/uautomizer/witness.graphml [2020-11-29 23:13:15,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:13:15,328 INFO L168 Benchmark]: Toolchain (without parser) took 2445.83 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 56.2 MB in the beginning and 80.8 MB in the end (delta: -24.6 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:15,329 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 62.1 MB in the beginning and 62.0 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:13:15,330 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.28 ms. Allocated memory is still 90.2 MB. Free memory was 55.9 MB in the beginning and 66.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:15,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.74 ms. Allocated memory is still 90.2 MB. Free memory was 66.6 MB in the beginning and 64.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:15,333 INFO L168 Benchmark]: Boogie Preprocessor took 59.60 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 63.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:15,335 INFO L168 Benchmark]: RCFGBuilder took 518.51 ms. Allocated memory is still 90.2 MB. Free memory was 63.2 MB in the beginning and 45.0 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:15,335 INFO L168 Benchmark]: TraceAbstraction took 1367.95 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 44.6 MB in the beginning and 84.4 MB in the end (delta: -39.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:13:15,336 INFO L168 Benchmark]: Witness Printer took 90.33 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 80.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:13:15,338 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory was 62.1 MB in the beginning and 62.0 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.28 ms. Allocated memory is still 90.2 MB. Free memory was 55.9 MB in the beginning and 66.6 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.74 ms. Allocated memory is still 90.2 MB. Free memory was 66.6 MB in the beginning and 64.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.60 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 63.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.51 ms. Allocated memory is still 90.2 MB. Free memory was 63.2 MB in the beginning and 45.0 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1367.95 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 44.6 MB in the beginning and 84.4 MB in the end (delta: -39.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 90.33 ms. Allocated memory is still 115.3 MB. Free memory was 84.4 MB in the beginning and 80.8 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i