./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 06914024aa49a34ce88c7dcbc25f89730c27c8e4 ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:34:57,188 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:34:57,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:34:57,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:34:57,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:34:57,197 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:34:57,197 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:34:57,199 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:34:57,200 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:34:57,200 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:34:57,201 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:34:57,201 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:34:57,202 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:34:57,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:34:57,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:34:57,204 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:34:57,205 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:34:57,206 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:34:57,207 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:34:57,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:34:57,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:34:57,210 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:34:57,212 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:34:57,212 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:34:57,212 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:34:57,213 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:34:57,213 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:34:57,214 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:34:57,215 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:34:57,215 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:34:57,216 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:34:57,216 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:34:57,216 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:34:57,216 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:34:57,217 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:34:57,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:34:57,218 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-22 23:34:57,228 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:34:57,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:34:57,228 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:34:57,229 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:34:57,229 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 23:34:57,229 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 23:34:57,229 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 23:34:57,230 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-22 23:34:57,230 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-22 23:34:57,231 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-22 23:34:57,231 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:34:57,231 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:34:57,231 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:34:57,231 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:34:57,231 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:34:57,231 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:34:57,232 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:34:57,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:34:57,232 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:34:57,232 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:34:57,232 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 23:34:57,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:34:57,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 06914024aa49a34ce88c7dcbc25f89730c27c8e4 [2018-11-22 23:34:57,254 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:34:57,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:34:57,264 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:34:57,265 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:34:57,265 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:34:57,265 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c [2018-11-22 23:34:57,300 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/data/61e0513e6/d904e08138e24d5cad2a7d8642519c46/FLAG99ed51323 [2018-11-22 23:34:57,616 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:34:57,617 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/sv-benchmarks/c/ldv-memsafety/memset3_true-valid-memsafety_true-termination.c [2018-11-22 23:34:57,620 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/data/61e0513e6/d904e08138e24d5cad2a7d8642519c46/FLAG99ed51323 [2018-11-22 23:34:57,631 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/data/61e0513e6/d904e08138e24d5cad2a7d8642519c46 [2018-11-22 23:34:57,633 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:34:57,635 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-22 23:34:57,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:34:57,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:34:57,639 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:34:57,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66318819 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57, skipping insertion in model container [2018-11-22 23:34:57,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:34:57,667 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:34:57,782 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:34:57,787 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:34:57,797 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:34:57,805 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:34:57,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57 WrapperNode [2018-11-22 23:34:57,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:34:57,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:34:57,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:34:57,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:34:57,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... [2018-11-22 23:34:57,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:34:57,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:34:57,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:34:57,824 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:34:57,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/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 [2018-11-22 23:34:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:34:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:34:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:34:57,899 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:34:57,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:34:57,964 WARN L605 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-11-22 23:34:58,003 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:34:58,003 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-22 23:34:58,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:34:58 BoogieIcfgContainer [2018-11-22 23:34:58,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:34:58,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:34:58,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:34:58,006 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:34:58,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:34:57" (1/3) ... [2018-11-22 23:34:58,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fc220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:34:58, skipping insertion in model container [2018-11-22 23:34:58,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:34:57" (2/3) ... [2018-11-22 23:34:58,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66fc220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:34:58, skipping insertion in model container [2018-11-22 23:34:58,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:34:58" (3/3) ... [2018-11-22 23:34:58,009 INFO L112 eAbstractionObserver]: Analyzing ICFG memset3_true-valid-memsafety_true-termination.c [2018-11-22 23:34:58,015 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:34:58,019 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-22 23:34:58,028 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-22 23:34:58,042 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-22 23:34:58,043 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:34:58,043 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-22 23:34:58,043 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:34:58,043 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:34:58,043 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:34:58,043 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:34:58,043 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:34:58,043 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:34:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-22 23:34:58,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-22 23:34:58,059 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:34:58,059 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:34:58,061 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:34:58,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:34:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847368, now seen corresponding path program 1 times [2018-11-22 23:34:58,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:34:58,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:34:58,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:34:58,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:34:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:34:58,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:34:58,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:34:58,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:34:58,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:34:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:34:58,185 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2018-11-22 23:34:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:34:58,211 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-22 23:34:58,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:34:58,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-22 23:34:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:34:58,217 INFO L225 Difference]: With dead ends: 19 [2018-11-22 23:34:58,217 INFO L226 Difference]: Without dead ends: 16 [2018-11-22 23:34:58,218 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:34:58,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-22 23:34:58,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-22 23:34:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-22 23:34:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-22 23:34:58,240 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-11-22 23:34:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:34:58,240 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-22 23:34:58,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:34:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-22 23:34:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-22 23:34:58,241 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:34:58,241 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:34:58,241 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:34:58,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:34:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1092847367, now seen corresponding path program 1 times [2018-11-22 23:34:58,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:34:58,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:34:58,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:34:58,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:34:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:34:58,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:34:58,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:34:58,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:34:58,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:34:58,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:34:58,292 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2018-11-22 23:34:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:34:58,296 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-11-22 23:34:58,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:34:58,296 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-22 23:34:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:34:58,297 INFO L225 Difference]: With dead ends: 15 [2018-11-22 23:34:58,297 INFO L226 Difference]: Without dead ends: 15 [2018-11-22 23:34:58,297 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:34:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-22 23:34:58,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-22 23:34:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-22 23:34:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-22 23:34:58,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2018-11-22 23:34:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:34:58,300 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-22 23:34:58,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:34:58,300 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-22 23:34:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-22 23:34:58,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:34:58,301 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:34:58,301 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:34:58,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:34:58,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1462327129, now seen corresponding path program 1 times [2018-11-22 23:34:58,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:34:58,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:34:58,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:34:58,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:34:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:34:58,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:34:58,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-22 23:34:58,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-22 23:34:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-22 23:34:58,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-22 23:34:58,344 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-11-22 23:34:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:34:58,362 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-22 23:34:58,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-22 23:34:58,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-22 23:34:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:34:58,363 INFO L225 Difference]: With dead ends: 18 [2018-11-22 23:34:58,363 INFO L226 Difference]: Without dead ends: 16 [2018-11-22 23:34:58,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-22 23:34:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-22 23:34:58,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-22 23:34:58,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-22 23:34:58,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-22 23:34:58,366 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2018-11-22 23:34:58,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:34:58,367 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-22 23:34:58,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-22 23:34:58,367 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-22 23:34:58,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-22 23:34:58,367 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:34:58,367 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:34:58,367 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:34:58,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:34:58,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1971150090, now seen corresponding path program 1 times [2018-11-22 23:34:58,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:34:58,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:34:58,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:34:58,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:34:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:34:58,431 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:34:58,432 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:34:58,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:34:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:34:58,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:34:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:34:58,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-22 23:34:58,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-22 23:34:58,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-22 23:34:58,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-22 23:34:58,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-22 23:34:58,534 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-11-22 23:34:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:34:58,551 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-22 23:34:58,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 23:34:58,551 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-22 23:34:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:34:58,552 INFO L225 Difference]: With dead ends: 19 [2018-11-22 23:34:58,552 INFO L226 Difference]: Without dead ends: 17 [2018-11-22 23:34:58,552 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-22 23:34:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-22 23:34:58,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-22 23:34:58,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-22 23:34:58,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-22 23:34:58,555 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2018-11-22 23:34:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:34:58,555 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-22 23:34:58,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-22 23:34:58,555 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-22 23:34:58,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 23:34:58,555 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:34:58,555 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:34:58,556 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION]=== [2018-11-22 23:34:58,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:34:58,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1034761479, now seen corresponding path program 2 times [2018-11-22 23:34:58,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-22 23:34:58,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-22 23:34:58,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:34:58,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:34:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:34:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:34:58,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 23:34:58,615 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-22 23:34:58,625 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-22 23:34:58,639 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-22 23:34:58,639 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-22 23:34:58,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-22 23:34:58,685 INFO L701 Elim1Store]: detected not equals via solver [2018-11-22 23:34:58,690 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-11-22 23:34:58,691 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-22 23:34:58,693 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-22 23:34:58,693 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-11-22 23:34:59,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-22 23:34:59,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 23:34:59,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2018-11-22 23:34:59,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-22 23:34:59,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-22 23:34:59,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=65, Unknown=1, NotChecked=0, Total=90 [2018-11-22 23:34:59,095 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2018-11-22 23:34:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:34:59,221 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-22 23:34:59,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-22 23:34:59,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-11-22 23:34:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:34:59,222 INFO L225 Difference]: With dead ends: 19 [2018-11-22 23:34:59,222 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:34:59,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=147, Unknown=1, NotChecked=0, Total=210 [2018-11-22 23:34:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:34:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:34:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:34:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:34:59,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-11-22 23:34:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:34:59,223 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:34:59,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-22 23:34:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:34:59,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:34:59,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:34:59 BoogieIcfgContainer [2018-11-22 23:34:59,228 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:34:59,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:34:59,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:34:59,229 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:34:59,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:34:58" (3/4) ... [2018-11-22 23:34:59,232 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:34:59,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:34:59,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.C_memset [2018-11-22 23:34:59,238 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:34:59,242 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-22 23:34:59,242 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-22 23:34:59,242 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 23:34:59,242 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 23:34:59,272 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_19a2c8d5-0dc7-4391-8014-5026162e11cd/bin-2019/uautomizer/witness.graphml [2018-11-22 23:34:59,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:34:59,273 INFO L168 Benchmark]: Toolchain (without parser) took 1638.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 959.8 MB in the beginning and 1.0 GB in the end (delta: -49.5 MB). Peak memory consumption was 87.9 MB. Max. memory is 11.5 GB. [2018-11-22 23:34:59,274 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:34:59,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.57 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:34:59,275 INFO L168 Benchmark]: Boogie Preprocessor took 18.07 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 23:34:59,275 INFO L168 Benchmark]: RCFGBuilder took 178.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-22 23:34:59,275 INFO L168 Benchmark]: TraceAbstraction took 1224.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 107.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 11.5 GB. [2018-11-22 23:34:59,276 INFO L168 Benchmark]: Witness Printer took 43.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:34:59,278 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.57 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.07 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -174.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1224.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 107.8 MB). Peak memory consumption was 107.8 MB. Max. memory is 11.5 GB. * Witness Printer took 43.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 25]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 29]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 3 error locations. SAFE Result, 1.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 17 SDslu, 86 SDs, 0 SdLazy, 85 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 90 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 83 ConstructedInterpolants, 8 QuantifiedInterpolants, 2976 SizeOfPredicates, 1 NumberOfNonLiveVariables, 133 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...