./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --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_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/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 8c573b473fe5d13973daf8eaca36a6666498a98a ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:35:54,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:35:54,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:35:54,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:35:54,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:35:54,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:35:54,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:35:54,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:35:54,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:35:54,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:35:54,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:35:54,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:35:54,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:35:54,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:35:54,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:35:54,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:35:54,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:35:54,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:35:54,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:35:54,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:35:54,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:35:54,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:35:54,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:35:54,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:35:54,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:35:54,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:35:54,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:35:54,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:35:54,243 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:35:54,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:35:54,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:35:54,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:35:54,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:35:54,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:35:54,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:35:54,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:35:54,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:35:54,254 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:35:54,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:35:54,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:35:54,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:35:54,259 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:35:54,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:35:54,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:35:54,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:35:54,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:35:54,309 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:35:54,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:35:54,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:35:54,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:35:54,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:35:54,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:35:54,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:35:54,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:35:54,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:35:54,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:35:54,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:35:54,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:35:54,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:35:54,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:35:54,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:35:54,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:35:54,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:35:54,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:35:54,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:35:54,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:35:54,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:35:54,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:35:54,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:35:54,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:35:54,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:35:54,317 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_9a41b255-841a-4dd1-a443-de7b79c200fb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c573b473fe5d13973daf8eaca36a6666498a98a [2020-11-30 00:35:54,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:35:54,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:35:54,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:35:54,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:35:54,666 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:35:54,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-30 00:35:54,769 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/data/f9c247754/3154696f139849dab1a37f88331dff2a/FLAGe056696f1 [2020-11-30 00:35:55,284 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:35:55,285 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-30 00:35:55,293 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/data/f9c247754/3154696f139849dab1a37f88331dff2a/FLAGe056696f1 [2020-11-30 00:35:55,653 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/data/f9c247754/3154696f139849dab1a37f88331dff2a [2020-11-30 00:35:55,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:35:55,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:35:55,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:55,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:35:55,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:35:55,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:55" (1/1) ... [2020-11-30 00:35:55,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f636e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:55, skipping insertion in model container [2020-11-30 00:35:55,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:35:55" (1/1) ... [2020-11-30 00:35:55,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:35:55,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:35:55,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:55,985 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:35:56,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:35:56,058 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:35:56,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56 WrapperNode [2020-11-30 00:35:56,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:35:56,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:56,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:35:56,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:35:56,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:35:56,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:35:56,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:35:56,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:35:56,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... [2020-11-30 00:35:56,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:35:56,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:35:56,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:35:56,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:35:56,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/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 [2020-11-30 00:35:56,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:35:56,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:35:56,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:35:56,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:35:56,624 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:35:56,624 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:35:56,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:56 BoogieIcfgContainer [2020-11-30 00:35:56,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:35:56,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:35:56,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:35:56,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:35:56,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:35:55" (1/3) ... [2020-11-30 00:35:56,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de028a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:35:56, skipping insertion in model container [2020-11-30 00:35:56,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:35:56" (2/3) ... [2020-11-30 00:35:56,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de028a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:35:56, skipping insertion in model container [2020-11-30 00:35:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:56" (3/3) ... [2020-11-30 00:35:56,657 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-11-30 00:35:56,683 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:35:56,689 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:35:56,703 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:35:56,733 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:35:56,733 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:35:56,733 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:35:56,733 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:35:56,734 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:35:56,734 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:35:56,734 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:35:56,734 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:35:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:35:56,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:35:56,756 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:56,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:56,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:56,765 INFO L82 PathProgramCache]: Analyzing trace with hash 520388738, now seen corresponding path program 1 times [2020-11-30 00:35:56,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:56,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455544157] [2020-11-30 00:35:56,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:57,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455544157] [2020-11-30 00:35:57,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:57,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:35:57,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308863533] [2020-11-30 00:35:57,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:35:57,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:57,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:35:57,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:35:57,047 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-11-30 00:35:57,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:57,170 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2020-11-30 00:35:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:35:57,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 00:35:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:57,182 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:35:57,183 INFO L226 Difference]: Without dead ends: 21 [2020-11-30 00:35:57,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:35:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-30 00:35:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-30 00:35:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:35:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-30 00:35:57,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 15 [2020-11-30 00:35:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:57,226 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-30 00:35:57,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:35:57,226 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-30 00:35:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:35:57,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:57,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:57,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:35:57,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:57,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:57,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2032115547, now seen corresponding path program 1 times [2020-11-30 00:35:57,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:57,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221486577] [2020-11-30 00:35:57,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:57,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221486577] [2020-11-30 00:35:57,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:35:57,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:35:57,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740370603] [2020-11-30 00:35:57,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:35:57,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:57,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:35:57,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:35:57,385 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-11-30 00:35:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:57,474 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-30 00:35:57,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:35:57,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 00:35:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:57,476 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:35:57,476 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:35:57,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:35:57,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:35:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-11-30 00:35:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:35:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-30 00:35:57,484 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2020-11-30 00:35:57,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:57,484 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-30 00:35:57,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:35:57,484 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-30 00:35:57,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:35:57,485 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:57,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:57,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:35:57,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1904238653, now seen corresponding path program 1 times [2020-11-30 00:35:57,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:57,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138364408] [2020-11-30 00:35:57,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:57,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138364408] [2020-11-30 00:35:57,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990749888] [2020-11-30 00:35:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/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 [2020-11-30 00:35:57,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:57,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:35:57,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:57,947 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:58,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:35:58,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-11-30 00:35:58,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248350074] [2020-11-30 00:35:58,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:35:58,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:58,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:35:58,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:35:58,061 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 12 states. [2020-11-30 00:35:58,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:58,401 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-30 00:35:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:35:58,402 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-11-30 00:35:58,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:58,403 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:35:58,403 INFO L226 Difference]: Without dead ends: 33 [2020-11-30 00:35:58,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2020-11-30 00:35:58,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-30 00:35:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-11-30 00:35:58,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 00:35:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-30 00:35:58,413 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-11-30 00:35:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:58,413 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-30 00:35:58,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:35:58,414 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-30 00:35:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 00:35:58,415 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:35:58,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:35:58,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 00:35:58,629 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:35:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:35:58,630 INFO L82 PathProgramCache]: Analyzing trace with hash -26308511, now seen corresponding path program 2 times [2020-11-30 00:35:58,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:35:58,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796189490] [2020-11-30 00:35:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:35:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:35:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:35:58,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796189490] [2020-11-30 00:35:58,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21836048] [2020-11-30 00:35:58,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/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 [2020-11-30 00:35:58,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:35:58,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:35:58,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:35:58,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:35:59,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:35:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:35:59,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:35:59,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-11-30 00:35:59,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666139069] [2020-11-30 00:35:59,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:35:59,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:35:59,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:35:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:35:59,117 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 15 states. [2020-11-30 00:35:59,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:35:59,701 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-11-30 00:35:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-30 00:35:59,702 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2020-11-30 00:35:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:35:59,703 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:35:59,703 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:35:59,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=255, Invalid=867, Unknown=0, NotChecked=0, Total=1122 [2020-11-30 00:35:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:35:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:35:59,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:35:59,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:35:59,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-11-30 00:35:59,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:35:59,706 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:35:59,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:35:59,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:35:59,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:35:59,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:35:59,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point L40(lines 25 56) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:36:00,266 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:36:00,267 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,267 INFO L274 CegarLoopResult]: For program point L49-2(lines 49 53) no Hoare annotation was computed. [2020-11-30 00:36:00,267 INFO L270 CegarLoopResult]: At program point L49-3(lines 49 53) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~p~0)) (.cse2 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse0 (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0))) (or (and (<= .cse0 (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse1 (= ULTIMATE.start_main_~i~0 0) .cse2 (<= .cse0 ULTIMATE.start_main_~bufsize_0~0) (<= (+ ULTIMATE.start_main_~bufsize~0 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~bufsize_0~0)))) [2020-11-30 00:36:00,267 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,267 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L277 CegarLoopResult]: At program point L54(lines 25 56) the Hoare annotation is: true [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-11-30 00:36:00,268 INFO L274 CegarLoopResult]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2020-11-30 00:36:00,269 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:36:00,269 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~p~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2020-11-30 00:36:00,269 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-30 00:36:00,269 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-30 00:36:00,269 INFO L270 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (<= 1 ULTIMATE.start_main_~p~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2020-11-30 00:36:00,269 INFO L274 CegarLoopResult]: For program point L39(lines 25 56) no Hoare annotation was computed. [2020-11-30 00:36:00,269 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-30 00:36:00,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:36:00 BoogieIcfgContainer [2020-11-30 00:36:00,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:36:00,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:36:00,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:36:00,295 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:36:00,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:35:56" (3/4) ... [2020-11-30 00:36:00,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:36:00,316 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-30 00:36:00,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:36:00,317 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:36:00,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:36:00,407 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9a41b255-841a-4dd1-a443-de7b79c200fb/bin/uautomizer/witness.graphml [2020-11-30 00:36:00,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:36:00,410 INFO L168 Benchmark]: Toolchain (without parser) took 4742.30 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 52.0 MB in the beginning and 90.5 MB in the end (delta: -38.5 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:00,410 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:36:00,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.08 ms. Allocated memory is still 83.9 MB. Free memory was 51.8 MB in the beginning and 61.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:00,412 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 59.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:00,413 INFO L168 Benchmark]: Boogie Preprocessor took 68.24 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 59.0 MB in the end (delta: 824.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:36:00,413 INFO L168 Benchmark]: RCFGBuilder took 455.59 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 45.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:00,415 INFO L168 Benchmark]: TraceAbstraction took 3665.42 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 44.8 MB in the beginning and 93.7 MB in the end (delta: -48.8 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:00,417 INFO L168 Benchmark]: Witness Printer took 113.54 ms. Allocated memory is still 123.7 MB. Free memory was 93.7 MB in the beginning and 90.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:36:00,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 30.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.08 ms. Allocated memory is still 83.9 MB. Free memory was 51.8 MB in the beginning and 61.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.40 ms. Allocated memory is still 83.9 MB. Free memory was 61.2 MB in the beginning and 59.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.24 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 59.0 MB in the end (delta: 824.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 455.59 ms. Allocated memory is still 83.9 MB. Free memory was 59.0 MB in the beginning and 45.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3665.42 ms. Allocated memory was 83.9 MB in the beginning and 123.7 MB in the end (delta: 39.8 MB). Free memory was 44.8 MB in the beginning and 93.7 MB in the end (delta: -48.8 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.1 GB. * Witness Printer took 113.54 ms. Allocated memory is still 123.7 MB. Free memory was 93.7 MB in the beginning and 90.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && !(0 == cond)) && 1 <= p) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && 1 <= leader_len) || ((((1 <= p && i == 0) && 1 <= leader_len) && 2 * ielen + p <= bufsize_0) && bufsize + p <= bufsize_0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 96 SDslu, 226 SDs, 0 SdLazy, 235 SolverSat, 79 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 20 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 307 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 325 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 15948 SizeOfPredicates, 16 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/36 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...