./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.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_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/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 400754ae011c17d3326e3fdd997cfc3a510c1705 .................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:49,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:49,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:49,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:49,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:49,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:49,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:49,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:49,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:49,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:49,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:49,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:49,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:49,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:49,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:49,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:49,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:49,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:49,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:49,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:49,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:49,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:49,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:49,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:49,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:49,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:49,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:49,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:49,162 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:49,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:49,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:49,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:49,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:49,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:49,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:49,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:49,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:49,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:49,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:49,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:49,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:49,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:49,232 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:49,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:49,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:49,235 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:49,235 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:49,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:49,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:49,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:49,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:49,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:49,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:49,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:49,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:49,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:49,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:49,239 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:49,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:49,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:49,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:49,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:49,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:49,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:49,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:49,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:49,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:49,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:49,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:49,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:49,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:49,242 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_e026616e-6fd9-437e-9386-30ff41d517ca/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 400754ae011c17d3326e3fdd997cfc3a510c1705 [2020-11-28 03:13:49,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:49,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:49,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:49,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:49,567 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:49,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2020-11-28 03:13:49,657 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/data/1198fc2cb/85ca0899d6c848c2992dd816a3e7c07f/FLAG8d825d541 [2020-11-28 03:13:50,117 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:50,117 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2020-11-28 03:13:50,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/data/1198fc2cb/85ca0899d6c848c2992dd816a3e7c07f/FLAG8d825d541 [2020-11-28 03:13:50,500 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/data/1198fc2cb/85ca0899d6c848c2992dd816a3e7c07f [2020-11-28 03:13:50,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:50,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:50,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:50,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:50,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:50,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4a56e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50, skipping insertion in model container [2020-11-28 03:13:50,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:50,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:50,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:50,730 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:50,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:50,753 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:50,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50 WrapperNode [2020-11-28 03:13:50,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:50,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:50,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:50,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:50,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:50,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:50,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:50,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:50,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... [2020-11-28 03:13:50,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:50,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:50,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:50,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:50,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-11-28 03:13:50,878 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-11-28 03:13:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:50,878 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-11-28 03:13:50,879 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-11-28 03:13:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:13:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:50,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:13:50,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:51,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:51,131 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:13:51,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:51 BoogieIcfgContainer [2020-11-28 03:13:51,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:51,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:51,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:51,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:51,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:50" (1/3) ... [2020-11-28 03:13:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de179f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:51, skipping insertion in model container [2020-11-28 03:13:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:50" (2/3) ... [2020-11-28 03:13:51,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de179f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:51, skipping insertion in model container [2020-11-28 03:13:51,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:51" (3/3) ... [2020-11-28 03:13:51,141 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-11-28 03:13:51,151 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:51,155 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:51,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:51,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:51,195 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:51,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:51,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:51,196 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:51,196 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:51,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:51,196 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 03:13:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:13:51,242 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:51,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:51,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1139225668, now seen corresponding path program 1 times [2020-11-28 03:13:51,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:51,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535524672] [2020-11-28 03:13:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:51,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535524672] [2020-11-28 03:13:51,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:51,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:13:51,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058801513] [2020-11-28 03:13:51,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:13:51,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:51,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:13:51,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:13:51,590 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-11-28 03:13:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:51,673 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-28 03:13:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:13:51,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 03:13:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:51,685 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:13:51,685 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:13:51,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:13:51,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:13:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 03:13:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:13:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 03:13:51,726 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-11-28 03:13:51,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:51,726 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 03:13:51,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:13:51,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 03:13:51,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:13:51,728 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:51,728 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:51,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:51,729 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:51,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:51,733 INFO L82 PathProgramCache]: Analyzing trace with hash 329952653, now seen corresponding path program 1 times [2020-11-28 03:13:51,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:51,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654390326] [2020-11-28 03:13:51,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:51,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:51,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654390326] [2020-11-28 03:13:51,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245374829] [2020-11-28 03:13:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/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 [2020-11-28 03:13:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-28 03:13:52,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:52,061 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-28 03:13:52,061 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:13:52,065 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:13:52,066 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:13:52,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-11-28 03:13:52,108 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-11-28 03:13:52,110 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:13:52,113 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:13:52,114 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:13:52,114 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2020-11-28 03:13:52,228 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-11-28 03:13:52,229 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:13:52,233 INFO L625 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-11-28 03:13:52,233 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:13:52,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-11-28 03:13:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:52,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:13:52,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-11-28 03:13:52,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827457975] [2020-11-28 03:13:52,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:13:52,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:13:52,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:13:52,238 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2020-11-28 03:13:52,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:52,473 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 03:13:52,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:13:52,474 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2020-11-28 03:13:52,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:52,474 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:13:52,475 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:13:52,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:13:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:13:52,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-28 03:13:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:13:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-28 03:13:52,480 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-11-28 03:13:52,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:52,483 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-28 03:13:52,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:13:52,484 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-28 03:13:52,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:13:52,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,486 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:13:52,704 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1665361436, now seen corresponding path program 2 times [2020-11-28 03:13:52,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220623946] [2020-11-28 03:13:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:52,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220623946] [2020-11-28 03:13:52,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244612667] [2020-11-28 03:13:52,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:53,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:13:53,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:13:53,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-28 03:13:53,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:53,052 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-11-28 03:13:53,053 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:13:53,054 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:13:53,055 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:13:53,055 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:1 [2020-11-28 03:13:53,123 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-11-28 03:13:53,123 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:13:53,129 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:13:53,130 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:13:53,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-11-28 03:13:53,222 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-11-28 03:13:53,223 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:13:53,226 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:13:53,227 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:13:53,227 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-11-28 03:13:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:13:53,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:13:53,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2020-11-28 03:13:53,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573800414] [2020-11-28 03:13:53,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 03:13:53,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 03:13:53,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:13:53,257 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 20 states. [2020-11-28 03:13:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:53,724 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-11-28 03:13:53,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:13:53,724 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-11-28 03:13:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:53,725 INFO L225 Difference]: With dead ends: 25 [2020-11-28 03:13:53,725 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:13:53,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2020-11-28 03:13:53,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:13:53,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:13:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:13:53,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:13:53,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-28 03:13:53,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:53,727 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:53,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 03:13:53,728 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:53,728 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:13:53,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:13:53,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:13:54,237 INFO L274 CegarLoopResult]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2020-11-28 03:13:54,238 INFO L270 CegarLoopResult]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (= .cse0 11)) (= 11 .cse1)) (or (not (= .cse0 10)) (= 10 .cse1)) (or (<= .cse1 12) (not (<= .cse0 12))) (or (not (< .cse0 21)) (< .cse1 21)))) [2020-11-28 03:13:54,238 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-28 03:13:54,238 INFO L274 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:13:54,238 INFO L274 CegarLoopResult]: For program point L14(lines 14 19) no Hoare annotation was computed. [2020-11-28 03:13:54,239 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse2 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (and (<= .cse0 11) (<= .cse1 11)) (not (= .cse2 11))) (or (not (< .cse2 21)) (and (< .cse1 20) (< .cse0 21))) (or (not (= .cse2 10)) (and (= .cse1 10) (= 10 .cse0))) (or (<= .cse0 12) (not (<= .cse2 12))))) [2020-11-28 03:13:54,239 INFO L274 CegarLoopResult]: For program point L12(lines 12 19) no Hoare annotation was computed. [2020-11-28 03:13:54,239 INFO L274 CegarLoopResult]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2020-11-28 03:13:54,239 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:13:54,240 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,240 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,240 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,240 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:13:54,240 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset) 10) [2020-11-28 03:13:54,240 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-11-28 03:13:54,240 INFO L274 CegarLoopResult]: For program point L22(lines 22 28) no Hoare annotation was computed. [2020-11-28 03:13:54,241 INFO L274 CegarLoopResult]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2020-11-28 03:13:54,241 INFO L270 CegarLoopResult]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 20) (not (< .cse1 20))) (or (= .cse0 10) (not (= .cse1 10))) (or (<= .cse0 11) (not (<= .cse1 11))))) [2020-11-28 03:13:54,241 INFO L274 CegarLoopResult]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2020-11-28 03:13:54,241 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse2 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 21) (not (< .cse1 20))) (or (and (<= .cse0 12) (< .cse2 20)) (not (<= .cse1 11))) (or (and (= .cse0 11) (<= .cse2 11)) (not (= .cse1 10))))) [2020-11-28 03:13:54,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:54 BoogieIcfgContainer [2020-11-28 03:13:54,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:54,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:54,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:54,247 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:54,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:51" (3/4) ... [2020-11-28 03:13:54,250 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:13:54,256 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-11-28 03:13:54,257 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2020-11-28 03:13:54,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 03:13:54,261 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 03:13:54,262 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:13:54,262 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:13:54,312 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e026616e-6fd9-437e-9386-30ff41d517ca/bin/uautomizer/witness.graphml [2020-11-28 03:13:54,312 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:54,313 INFO L168 Benchmark]: Toolchain (without parser) took 3808.88 ms. Allocated memory was 102.8 MB in the beginning and 159.4 MB in the end (delta: 56.6 MB). Free memory was 75.4 MB in the beginning and 131.0 MB in the end (delta: -55.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:54,314 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 52.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:54,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.21 ms. Allocated memory is still 102.8 MB. Free memory was 75.2 MB in the beginning and 78.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.14 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 77.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,315 INFO L168 Benchmark]: Boogie Preprocessor took 33.95 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 76.1 MB in the end (delta: 953.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:54,316 INFO L168 Benchmark]: RCFGBuilder took 312.54 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 63.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,318 INFO L168 Benchmark]: TraceAbstraction took 3111.80 ms. Allocated memory was 102.8 MB in the beginning and 159.4 MB in the end (delta: 56.6 MB). Free memory was 62.9 MB in the beginning and 133.1 MB in the end (delta: -70.2 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,320 INFO L168 Benchmark]: Witness Printer took 66.24 ms. Allocated memory is still 159.4 MB. Free memory was 133.1 MB in the beginning and 131.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:54,323 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 102.8 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 52.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.21 ms. Allocated memory is still 102.8 MB. Free memory was 75.2 MB in the beginning and 78.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.14 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 77.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.95 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 76.1 MB in the end (delta: 953.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 312.54 ms. Allocated memory is still 102.8 MB. Free memory was 75.9 MB in the beginning and 63.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3111.80 ms. Allocated memory was 102.8 MB in the beginning and 159.4 MB in the end (delta: 56.6 MB). Free memory was 62.9 MB in the beginning and 133.1 MB in the end (delta: -70.2 MB). Peak memory consumption was 59.5 MB. Max. memory is 16.1 GB. * Witness Printer took 66.24 ms. Allocated memory is still 159.4 MB. Free memory was 133.1 MB in the beginning and 131.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 12 SDslu, 73 SDs, 0 SdLazy, 229 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 275 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3958 SizeOfPredicates, 24 NumberOfNonLiveVariables, 222 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...