./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e3d50e5c95506905bfc503f1fcedc0356db6a24 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:18:28,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:18:28,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:18:28,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:18:28,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:18:28,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:18:28,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:18:28,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:18:28,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:18:28,134 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:18:28,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:18:28,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:18:28,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:18:28,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:18:28,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:18:28,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:18:28,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:18:28,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:18:28,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:18:28,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:18:28,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:18:28,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:18:28,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:18:28,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:18:28,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:18:28,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:18:28,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:18:28,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:18:28,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:18:28,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:18:28,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:18:28,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:18:28,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:18:28,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:18:28,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:18:28,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:18:28,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:18:28,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:18:28,199 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:18:28,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:18:28,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:18:28,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-30 00:18:28,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:18:28,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:18:28,250 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:18:28,250 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:18:28,250 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:18:28,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:18:28,251 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:18:28,251 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:18:28,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:18:28,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:18:28,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:18:28,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:18:28,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:18:28,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:18:28,254 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 00:18:28,254 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:18:28,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:18:28,254 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:18:28,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:18:28,255 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:18:28,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:18:28,255 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:18:28,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:18:28,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:18:28,256 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:18:28,256 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:18:28,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:18:28,257 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:18:28,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:18:28,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:18:28,258 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:18:28,258 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_fcbe057d-c87c-4477-a1b0-3ee992fe242c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3d50e5c95506905bfc503f1fcedc0356db6a24 [2020-11-30 00:18:28,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:18:28,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:18:28,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:18:28,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:18:28,573 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:18:28,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-30 00:18:28,676 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/data/c4f37c416/5cd2671efcd740fab4fcf73e587e4c55/FLAG4c749ad8c [2020-11-30 00:18:29,211 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:18:29,213 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-11-30 00:18:29,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/data/c4f37c416/5cd2671efcd740fab4fcf73e587e4c55/FLAG4c749ad8c [2020-11-30 00:18:29,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/data/c4f37c416/5cd2671efcd740fab4fcf73e587e4c55 [2020-11-30 00:18:29,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:18:29,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:18:29,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:29,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:18:29,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:18:29,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45cfd20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29, skipping insertion in model container [2020-11-30 00:18:29,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:18:29,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:18:29,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:29,874 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:18:29,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:18:29,907 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:18:29,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29 WrapperNode [2020-11-30 00:18:29,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:18:29,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:29,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:18:29,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:18:29,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:18:29,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:18:29,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:18:29,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:18:29,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... [2020-11-30 00:18:29,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:18:29,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:18:29,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:18:29,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:18:29,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/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 00:18:30,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:18:30,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:18:30,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:18:30,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:18:30,486 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:18:30,486 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:18:30,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:30 BoogieIcfgContainer [2020-11-30 00:18:30,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:18:30,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:18:30,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:18:30,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:18:30,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:18:29" (1/3) ... [2020-11-30 00:18:30,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c668be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:30, skipping insertion in model container [2020-11-30 00:18:30,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:18:29" (2/3) ... [2020-11-30 00:18:30,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c668be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:18:30, skipping insertion in model container [2020-11-30 00:18:30,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:30" (3/3) ... [2020-11-30 00:18:30,499 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2020-11-30 00:18:30,511 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:18:30,516 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 00:18:30,528 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:18:30,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:18:30,554 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:18:30,555 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:18:30,555 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:18:30,555 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:18:30,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:18:30,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:18:30,555 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:18:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-30 00:18:30,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 00:18:30,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:30,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 00:18:30,577 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:30,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:30,583 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-11-30 00:18:30,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:30,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057217357] [2020-11-30 00:18:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:30,752 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 00:18:30,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057217357] [2020-11-30 00:18:30,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:30,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:18:30,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294706169] [2020-11-30 00:18:30,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:18:30,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:30,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:18:30,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:30,776 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-11-30 00:18:30,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:30,827 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-11-30 00:18:30,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:18:30,829 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-30 00:18:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:30,838 INFO L225 Difference]: With dead ends: 30 [2020-11-30 00:18:30,838 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 00:18:30,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:30,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 00:18:30,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-30 00:18:30,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-30 00:18:30,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-30 00:18:30,874 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2020-11-30 00:18:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:30,875 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-30 00:18:30,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:18:30,875 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-30 00:18:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 00:18:30,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:30,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 00:18:30,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:18:30,877 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:30,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:30,878 INFO L82 PathProgramCache]: Analyzing trace with hash 28695877, now seen corresponding path program 1 times [2020-11-30 00:18:30,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:30,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650598416] [2020-11-30 00:18:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:30,919 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 00:18:30,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650598416] [2020-11-30 00:18:30,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:30,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:18:30,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085705828] [2020-11-30 00:18:30,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:18:30,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:30,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:18:30,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:30,923 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2020-11-30 00:18:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:30,943 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-30 00:18:30,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:18:30,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-30 00:18:30,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:30,946 INFO L225 Difference]: With dead ends: 15 [2020-11-30 00:18:30,946 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 00:18:30,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:18:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 00:18:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 00:18:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 00:18:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-30 00:18:30,950 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2020-11-30 00:18:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:30,950 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-30 00:18:30,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:18:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-30 00:18:30,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:18:30,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:30,951 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:30,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:18:30,954 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:30,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:30,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1806935623, now seen corresponding path program 1 times [2020-11-30 00:18:30,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:30,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597129682] [2020-11-30 00:18:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:31,032 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 00:18:31,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597129682] [2020-11-30 00:18:31,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:31,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:31,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672833146] [2020-11-30 00:18:31,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:18:31,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:31,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:18:31,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:18:31,035 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2020-11-30 00:18:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:31,101 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-30 00:18:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:18:31,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 00:18:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:31,103 INFO L225 Difference]: With dead ends: 21 [2020-11-30 00:18:31,103 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:18:31,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:18:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 00:18:31,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 00:18:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 00:18:31,109 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 7 [2020-11-30 00:18:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:31,110 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 00:18:31,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:18:31,110 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 00:18:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:18:31,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:31,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:31,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:18:31,111 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1298347849, now seen corresponding path program 1 times [2020-11-30 00:18:31,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:31,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514297001] [2020-11-30 00:18:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:31,199 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 00:18:31,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514297001] [2020-11-30 00:18:31,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:31,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:31,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390115184] [2020-11-30 00:18:31,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:18:31,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:31,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:18:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:18:31,202 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2020-11-30 00:18:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:31,236 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-30 00:18:31,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:18:31,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 00:18:31,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:31,239 INFO L225 Difference]: With dead ends: 19 [2020-11-30 00:18:31,239 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:18:31,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:18:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:18:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:18:31,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 00:18:31,247 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-11-30 00:18:31,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:31,247 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 00:18:31,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:18:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 00:18:31,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:18:31,249 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:31,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:31,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:18:31,250 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:31,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1594077713, now seen corresponding path program 1 times [2020-11-30 00:18:31,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:31,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545212643] [2020-11-30 00:18:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:31,303 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 00:18:31,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545212643] [2020-11-30 00:18:31,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:18:31,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:18:31,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480465688] [2020-11-30 00:18:31,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:18:31,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:31,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:18:31,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:18:31,306 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2020-11-30 00:18:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:31,347 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-30 00:18:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:18:31,348 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 00:18:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:31,349 INFO L225 Difference]: With dead ends: 21 [2020-11-30 00:18:31,349 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 00:18:31,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:18:31,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 00:18:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 00:18:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:18:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-30 00:18:31,353 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2020-11-30 00:18:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:31,353 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-30 00:18:31,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:18:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-30 00:18:31,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:18:31,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:31,354 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:31,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:18:31,355 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:31,355 INFO L82 PathProgramCache]: Analyzing trace with hash -220300107, now seen corresponding path program 1 times [2020-11-30 00:18:31,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:31,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733491048] [2020-11-30 00:18:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:31,471 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 00:18:31,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733491048] [2020-11-30 00:18:31,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73741969] [2020-11-30 00:18:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/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 00:18:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:31,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:18:31,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:31,627 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 00:18:31,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:31,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-30 00:18:31,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241899520] [2020-11-30 00:18:31,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:18:31,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:31,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:18:31,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:18:31,635 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2020-11-30 00:18:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:31,740 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-30 00:18:31,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:18:31,744 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-30 00:18:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:31,744 INFO L225 Difference]: With dead ends: 27 [2020-11-30 00:18:31,745 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 00:18:31,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:18:31,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 00:18:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-30 00:18:31,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:18:31,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-30 00:18:31,749 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 14 [2020-11-30 00:18:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:31,750 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-30 00:18:31,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:18:31,750 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-30 00:18:31,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:18:31,750 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:31,751 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:18:31,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 00:18:31,964 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:31,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:31,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1760631329, now seen corresponding path program 1 times [2020-11-30 00:18:31,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:31,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590951644] [2020-11-30 00:18:31,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:32,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590951644] [2020-11-30 00:18:32,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530991667] [2020-11-30 00:18:32,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/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 00:18:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:32,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:18:32,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:32,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:18:32,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-11-30 00:18:32,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094582641] [2020-11-30 00:18:32,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:18:32,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:32,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:18:32,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:18:32,189 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-30 00:18:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:32,248 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-30 00:18:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:18:32,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:18:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:32,249 INFO L225 Difference]: With dead ends: 24 [2020-11-30 00:18:32,250 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:18:32,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:18:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:18:32,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:18:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:18:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-30 00:18:32,255 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 15 [2020-11-30 00:18:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:32,255 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-30 00:18:32,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:18:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-30 00:18:32,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:18:32,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:32,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-30 00:18:32,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:32,480 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:32,481 INFO L82 PathProgramCache]: Analyzing trace with hash -250405661, now seen corresponding path program 1 times [2020-11-30 00:18:32,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:32,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389349427] [2020-11-30 00:18:32,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:32,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:32,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389349427] [2020-11-30 00:18:32,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21763354] [2020-11-30 00:18:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:32,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:18:32,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:32,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:32,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 9 [2020-11-30 00:18:32,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470853386] [2020-11-30 00:18:32,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:18:32,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:32,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:18:32,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:18:32,886 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 10 states. [2020-11-30 00:18:33,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:33,170 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-11-30 00:18:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:18:33,172 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-11-30 00:18:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:33,172 INFO L225 Difference]: With dead ends: 35 [2020-11-30 00:18:33,173 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 00:18:33,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:18:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 00:18:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-30 00:18:33,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 00:18:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-30 00:18:33,178 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 17 [2020-11-30 00:18:33,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:33,178 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-30 00:18:33,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:18:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-30 00:18:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:18:33,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:33,179 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2020-11-30 00:18:33,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:33,380 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:33,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:33,380 INFO L82 PathProgramCache]: Analyzing trace with hash -961007993, now seen corresponding path program 2 times [2020-11-30 00:18:33,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:33,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940341695] [2020-11-30 00:18:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:33,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940341695] [2020-11-30 00:18:33,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508825598] [2020-11-30 00:18:33,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:33,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-30 00:18:33,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:33,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:18:33,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-30 00:18:33,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:33,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2020-11-30 00:18:33,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432250719] [2020-11-30 00:18:33,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:18:33,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:33,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:18:33,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:18:33,582 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 10 states. [2020-11-30 00:18:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:33,749 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-11-30 00:18:33,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:18:33,766 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-30 00:18:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:33,767 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:18:33,767 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:18:33,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-11-30 00:18:33,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:18:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-30 00:18:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-30 00:18:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-30 00:18:33,774 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-11-30 00:18:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:33,781 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-30 00:18:33,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:18:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-30 00:18:33,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-30 00:18:33,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:18:33,784 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2020-11-30 00:18:33,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:33,997 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 00:18:33,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:18:33,997 INFO L82 PathProgramCache]: Analyzing trace with hash 255481123, now seen corresponding path program 2 times [2020-11-30 00:18:33,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:18:33,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962593333] [2020-11-30 00:18:33,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:18:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:18:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 00:18:34,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962593333] [2020-11-30 00:18:34,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732414604] [2020-11-30 00:18:34,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:18:34,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:18:34,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:18:34,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 00:18:34,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:18:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:18:34,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:18:34,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 18 [2020-11-30 00:18:34,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292277886] [2020-11-30 00:18:34,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-30 00:18:34,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:18:34,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 00:18:34,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:18:34,495 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 19 states. [2020-11-30 00:18:35,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:18:35,085 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-30 00:18:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 00:18:35,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 31 [2020-11-30 00:18:35,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:18:35,086 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:18:35,087 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:18:35,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:18:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:18:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:18:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:18:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:18:35,088 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-11-30 00:18:35,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:18:35,088 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:18:35,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-30 00:18:35,089 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:18:35,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:18:35,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 00:18:35,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 00:18:35,393 INFO L270 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-30 00:18:35,393 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-11-30 00:18:35,394 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-11-30 00:18:35,395 INFO L270 CegarLoopResult]: At program point L24-4(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~k~0 2147483647))) (or (and .cse0 (<= 1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= ULTIMATE.start_main_~n~0 2147483647) .cse1) (and .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~j~0 0) .cse1))) [2020-11-30 00:18:35,395 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 27) no Hoare annotation was computed. [2020-11-30 00:18:35,395 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-30 00:18:35,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:18:35 BoogieIcfgContainer [2020-11-30 00:18:35,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:18:35,410 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:18:35,410 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:18:35,410 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:18:35,410 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:18:30" (3/4) ... [2020-11-30 00:18:35,414 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:18:35,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:18:35,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:18:35,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:18:35,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:18:35,476 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fcbe057d-c87c-4477-a1b0-3ee992fe242c/bin/uautomizer/witness.graphml [2020-11-30 00:18:35,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:18:35,478 INFO L168 Benchmark]: Toolchain (without parser) took 5880.31 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 56.0 MB in the beginning and 54.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:35,479 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:35,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.36 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.7 MB in the beginning and 82.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:35,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 104.9 MB. Free memory was 82.0 MB in the beginning and 80.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:35,480 INFO L168 Benchmark]: Boogie Preprocessor took 23.57 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 79.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:18:35,481 INFO L168 Benchmark]: RCFGBuilder took 517.08 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 67.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:35,482 INFO L168 Benchmark]: TraceAbstraction took 4918.82 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 66.7 MB in the beginning and 56.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:35,482 INFO L168 Benchmark]: Witness Printer took 66.77 ms. Allocated memory is still 130.0 MB. Free memory was 56.5 MB in the beginning and 54.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:18:35,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 86.0 MB. Free memory is still 44.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.36 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 55.7 MB in the beginning and 82.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.01 ms. Allocated memory is still 104.9 MB. Free memory was 82.0 MB in the beginning and 80.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.57 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 79.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 517.08 ms. Allocated memory is still 104.9 MB. Free memory was 79.4 MB in the beginning and 67.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4918.82 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 66.7 MB in the beginning and 56.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 38.0 MB. Max. memory is 16.1 GB. * Witness Printer took 66.77 ms. Allocated memory is still 130.0 MB. Free memory was 56.5 MB in the beginning and 54.4 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: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((1 <= n && 1 <= j) && n <= k + j) && n <= 2147483647) && k <= 2147483647) || (((1 <= n && n <= k) && j == 0) && k <= 2147483647) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 117 SDslu, 166 SDs, 0 SdLazy, 531 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=8, 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, 10 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 35 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 231 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 18078 SizeOfPredicates, 20 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 35/146 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...