./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark05_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_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/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 dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:15:15,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:15,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:15,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:15,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:15,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:15,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:15,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:15,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:15,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:15,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:15,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:15,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:15,575 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:15,576 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:15,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:15,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:15,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:15,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:15,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:15,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:15,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:15,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:15,606 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:15,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:15,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:15,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:15,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:15,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:15,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:15,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:15,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:15,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:15,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:15,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:15,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:15,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:15,627 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:15,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:15,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:15,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:15,632 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/config/svcomp-Overflow-32bit-Automizer_Default.epf [2020-11-28 03:15:15,673 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:15,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:15,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:15,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:15,676 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:15,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:15,676 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:15,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:15:15,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:15,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:15,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:15,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:15:15,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:15:15,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:15:15,678 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:15:15,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:15,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:15:15,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:15,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:15:15,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:15,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:15,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:15:15,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:15:15,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:15,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:15,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:15:15,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:15:15,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:15,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:15:15,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:15:15,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:15,682 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_174bf95f-0124-4f37-bd5a-4bf060be6827/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc958b9ca44e6df037a80498d8cbf6f2fc13bb26 [2020-11-28 03:15:15,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:15,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:15,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:15,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:15,982 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:15,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-28 03:15:16,070 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/data/1c76befec/fd2d57d49a06462694cc9a8391047e89/FLAGf0c50038c [2020-11-28 03:15:16,581 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:16,582 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/sv-benchmarks/c/loop-zilu/benchmark05_conjunctive.i [2020-11-28 03:15:16,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/data/1c76befec/fd2d57d49a06462694cc9a8391047e89/FLAGf0c50038c [2020-11-28 03:15:16,943 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/data/1c76befec/fd2d57d49a06462694cc9a8391047e89 [2020-11-28 03:15:16,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:16,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:15:16,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:16,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:16,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:16,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:16" (1/1) ... [2020-11-28 03:15:16,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d977de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:16, skipping insertion in model container [2020-11-28 03:15:16,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:16" (1/1) ... [2020-11-28 03:15:16,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:16,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:15:17,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:17,199 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:15:17,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:17,228 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:15:17,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17 WrapperNode [2020-11-28 03:15:17,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:17,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:17,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:15:17,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:15:17,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,245 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:17,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:15:17,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:15:17,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:15:17,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... [2020-11-28 03:15:17,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:15:17,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:15:17,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:15:17,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:15:17,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:15:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:15:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:15:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:15:17,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:15:17,690 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:15:17,690 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:15:17,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:17 BoogieIcfgContainer [2020-11-28 03:15:17,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:15:17,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:15:17,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:15:17,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:15:17,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:16" (1/3) ... [2020-11-28 03:15:17,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c15cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:17, skipping insertion in model container [2020-11-28 03:15:17,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:17" (2/3) ... [2020-11-28 03:15:17,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c15cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:17, skipping insertion in model container [2020-11-28 03:15:17,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:17" (3/3) ... [2020-11-28 03:15:17,700 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2020-11-28 03:15:17,710 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:15:17,714 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:15:17,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:15:17,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:15:17,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:15:17,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:15:17,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:15:17,755 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:15:17,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:15:17,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:15:17,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:15:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-28 03:15:17,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:15:17,777 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:17,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:15:17,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:15:17,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:17,784 INFO L82 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2020-11-28 03:15:17,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:17,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352303886] [2020-11-28 03:15:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:18,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352303886] [2020-11-28 03:15:18,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:18,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:15:18,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402339431] [2020-11-28 03:15:18,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:18,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:18,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:18,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:18,112 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-11-28 03:15:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:18,240 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2020-11-28 03:15:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:15:18,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2020-11-28 03:15:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:18,250 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:15:18,250 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 03:15:18,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:15:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 03:15:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 03:15:18,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 03:15:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-28 03:15:18,288 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2020-11-28 03:15:18,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:18,289 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-28 03:15:18,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-28 03:15:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:15:18,289 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:18,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:15:18,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:15:18,290 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:15:18,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:18,294 INFO L82 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2020-11-28 03:15:18,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:18,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700865754] [2020-11-28 03:15:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:18,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700865754] [2020-11-28 03:15:18,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:18,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:18,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860824941] [2020-11-28 03:15:18,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:15:18,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:18,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:15:18,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:15:18,370 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2020-11-28 03:15:18,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:18,399 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-11-28 03:15:18,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:15:18,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 03:15:18,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:18,401 INFO L225 Difference]: With dead ends: 12 [2020-11-28 03:15:18,401 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:15:18,402 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 [2020-11-28 03:15:18,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:15:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:15:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:15:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-11-28 03:15:18,406 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2020-11-28 03:15:18,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:18,406 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-11-28 03:15:18,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:15:18,406 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-11-28 03:15:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:15:18,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:18,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:18,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:15:18,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:15:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash 183289487, now seen corresponding path program 1 times [2020-11-28 03:15:18,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:18,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434497069] [2020-11-28 03:15:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:18,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434497069] [2020-11-28 03:15:18,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:18,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:15:18,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841765232] [2020-11-28 03:15:18,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:15:18,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:18,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:15:18,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:15:18,479 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2020-11-28 03:15:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:18,594 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2020-11-28 03:15:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:15:18,595 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 03:15:18,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:18,596 INFO L225 Difference]: With dead ends: 19 [2020-11-28 03:15:18,596 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:15:18,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:15:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:15:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-28 03:15:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:15:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-28 03:15:18,601 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-11-28 03:15:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:18,602 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-28 03:15:18,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:15:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-28 03:15:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:15:18,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:18,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:18,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:15:18,603 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:15:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:18,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1387006858, now seen corresponding path program 1 times [2020-11-28 03:15:18,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:18,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348083864] [2020-11-28 03:15:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:18,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:18,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348083864] [2020-11-28 03:15:18,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:15:18,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:15:18,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806998392] [2020-11-28 03:15:18,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:15:18,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:18,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:15:18,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:15:18,653 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 4 states. [2020-11-28 03:15:18,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:18,692 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-28 03:15:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:15:18,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:15:18,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:18,693 INFO L225 Difference]: With dead ends: 16 [2020-11-28 03:15:18,694 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:15:18,694 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 [2020-11-28 03:15:18,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:15:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:15:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:15:18,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-11-28 03:15:18,700 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2020-11-28 03:15:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:18,700 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-11-28 03:15:18,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:15:18,701 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-11-28 03:15:18,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:15:18,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:15:18,702 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:18,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:15:18,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:15:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:18,703 INFO L82 PathProgramCache]: Analyzing trace with hash 742287368, now seen corresponding path program 1 times [2020-11-28 03:15:18,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:18,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47837403] [2020-11-28 03:15:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:18,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:15:18,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47837403] [2020-11-28 03:15:18,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708502463] [2020-11-28 03:15:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:18,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:15:18,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:19,031 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:15:19,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:15:19,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-11-28 03:15:19,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952114241] [2020-11-28 03:15:19,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:15:19,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:15:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:15:19,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:15:19,034 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 9 states. [2020-11-28 03:15:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:15:19,218 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2020-11-28 03:15:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:15:19,220 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-28 03:15:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:15:19,220 INFO L225 Difference]: With dead ends: 18 [2020-11-28 03:15:19,220 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:15:19,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:15:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:15:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:15:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:15:19,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:15:19,222 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-28 03:15:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:15:19,222 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:19,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:15:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:15:19,222 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:15:19,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:15:19,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:15:19,523 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 03:15:19,523 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L270 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 2147483647) [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 03:15:19,524 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-11-28 03:15:19,525 INFO L270 CegarLoopResult]: At program point L26-4(lines 24 27) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~x~0 2147483647)) (.cse1 (<= 0 ULTIMATE.start_main_~y~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 2147483647))) (or (and .cse0 .cse1 (<= 0 ULTIMATE.start_main_~x~0) .cse2 (< ULTIMATE.start_main_~y~0 2147483647)) (and .cse0 (< ULTIMATE.start_main_~y~0 (+ ULTIMATE.start_main_~x~0 1)) .cse1 .cse2))) [2020-11-28 03:15:19,525 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 27) no Hoare annotation was computed. [2020-11-28 03:15:19,526 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 03:15:19,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:15:19 BoogieIcfgContainer [2020-11-28 03:15:19,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:15:19,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:15:19,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:15:19,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:15:19,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:17" (3/4) ... [2020-11-28 03:15:19,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:15:19,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:15:19,572 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:15:19,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:19,573 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:15:19,641 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_174bf95f-0124-4f37-bd5a-4bf060be6827/bin/uautomizer/witness.graphml [2020-11-28 03:15:19,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:15:19,647 INFO L168 Benchmark]: Toolchain (without parser) took 2693.88 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 55.8 MB in the beginning and 71.1 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:19,647 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 45.6 MB in the beginning and 45.5 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:19,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.69 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 63.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:19,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 62.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:19,648 INFO L168 Benchmark]: Boogie Preprocessor took 20.27 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 61.5 MB in the end (delta: 833.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:19,649 INFO L168 Benchmark]: RCFGBuilder took 407.62 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 49.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:19,649 INFO L168 Benchmark]: TraceAbstraction took 1863.07 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 48.9 MB in the beginning and 74.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:19,650 INFO L168 Benchmark]: Witness Printer took 85.30 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 71.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:19,652 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory was 45.6 MB in the beginning and 45.5 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.69 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 63.9 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.40 ms. Allocated memory is still 86.0 MB. Free memory was 63.9 MB in the beginning and 62.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.27 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 61.5 MB in the end (delta: 833.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 407.62 ms. Allocated memory is still 86.0 MB. Free memory was 61.2 MB in the beginning and 49.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1863.07 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 48.9 MB in the beginning and 74.0 MB in the end (delta: -25.1 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Witness Printer took 85.30 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 71.1 MB in the end (delta: 2.9 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: 26]: 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: 26]: 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((x <= 2147483647 && 0 <= y) && 0 <= x) && n <= 2147483647) && y < 2147483647) || (((x <= 2147483647 && y < x + 1) && 0 <= y) && n <= 2147483647) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: n <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 88 SDslu, 52 SDs, 0 SdLazy, 108 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 35 HoareAnnotationTreeSize, 2 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1532 SizeOfPredicates, 4 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/10 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...