./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/mod4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invariants/mod4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 475c628c7fa35464b80d0910fb562858270fdb34 .................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:04:53,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:04:53,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:04:53,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:04:53,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:04:53,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:04:53,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:04:53,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:04:53,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:04:53,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:04:53,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:04:53,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:04:53,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:04:53,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:04:53,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:04:53,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:04:53,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:04:53,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:04:53,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:04:53,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:04:53,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:04:53,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:04:53,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:04:53,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:04:53,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:04:53,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:04:53,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:04:53,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:04:53,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:04:53,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:04:53,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:04:53,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:04:53,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:04:53,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:04:53,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:04:53,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:04:53,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:04:53,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:04:53,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:04:53,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:04:53,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:04:53,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:04:53,981 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:04:53,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:04:53,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:04:53,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:04:53,982 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:04:53,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:04:53,983 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:04:53,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:04:53,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:04:53,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:04:53,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:04:53,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:04:53,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:04:53,984 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:04:53,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:04:53,984 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:04:53,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:04:53,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:04:53,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:04:53,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:04:53,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:04:53,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:04:53,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:04:53,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:04:53,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:04:53,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:04:53,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:04:53,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:04:53,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 475c628c7fa35464b80d0910fb562858270fdb34 [2019-11-20 04:04:54,155 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:04:54,166 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:04:54,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:04:54,171 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:04:54,171 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:04:54,172 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/../../sv-benchmarks/c/loop-invariants/mod4.c [2019-11-20 04:04:54,236 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/data/82d20fb69/87c5a277cf3f4f0794dd67def729f880/FLAGf6a222381 [2019-11-20 04:04:54,576 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:04:54,577 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/sv-benchmarks/c/loop-invariants/mod4.c [2019-11-20 04:04:54,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/data/82d20fb69/87c5a277cf3f4f0794dd67def729f880/FLAGf6a222381 [2019-11-20 04:04:54,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/data/82d20fb69/87c5a277cf3f4f0794dd67def729f880 [2019-11-20 04:04:54,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:04:54,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:04:54,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:04:54,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:04:54,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:04:54,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:04:54" (1/1) ... [2019-11-20 04:04:54,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14821eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:54, skipping insertion in model container [2019-11-20 04:04:54,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:04:54" (1/1) ... [2019-11-20 04:04:54,969 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:04:54,982 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:04:55,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:04:55,184 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:04:55,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:04:55,319 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:04:55,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55 WrapperNode [2019-11-20 04:04:55,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:04:55,322 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:04:55,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:04:55,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:04:55,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:04:55,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:04:55,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:04:55,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:04:55,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... [2019-11-20 04:04:55,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:04:55,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:04:55,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:04:55,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:04:55,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/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 [2019-11-20 04:04:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:04:55,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:04:55,590 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:04:55,590 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-20 04:04:55,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:04:55 BoogieIcfgContainer [2019-11-20 04:04:55,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:04:55,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:04:55,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:04:55,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:04:55,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:04:54" (1/3) ... [2019-11-20 04:04:55,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d26ddac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:04:55, skipping insertion in model container [2019-11-20 04:04:55,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:04:55" (2/3) ... [2019-11-20 04:04:55,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d26ddac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:04:55, skipping insertion in model container [2019-11-20 04:04:55,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:04:55" (3/3) ... [2019-11-20 04:04:55,605 INFO L109 eAbstractionObserver]: Analyzing ICFG mod4.c [2019-11-20 04:04:55,615 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:04:55,622 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 04:04:55,635 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 04:04:55,666 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:04:55,666 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:04:55,667 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:04:55,667 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:04:55,667 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:04:55,667 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:04:55,667 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:04:55,668 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:04:55,682 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-20 04:04:55,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 04:04:55,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:04:55,688 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 04:04:55,688 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:04:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:04:55,694 INFO L82 PathProgramCache]: Analyzing trace with hash 29954948, now seen corresponding path program 1 times [2019-11-20 04:04:55,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:04:55,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107986220] [2019-11-20 04:04:55,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:04:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:04:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:04:55,820 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107986220] [2019-11-20 04:04:55,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:04:55,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:04:55,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632249276] [2019-11-20 04:04:55,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 04:04:55,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:04:55,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 04:04:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:04:55,848 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-11-20 04:04:55,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:04:55,867 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-11-20 04:04:55,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 04:04:55,869 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-11-20 04:04:55,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:04:55,879 INFO L225 Difference]: With dead ends: 19 [2019-11-20 04:04:55,879 INFO L226 Difference]: Without dead ends: 7 [2019-11-20 04:04:55,882 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 04:04:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-20 04:04:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 04:04:55,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 04:04:55,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-20 04:04:55,909 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-20 04:04:55,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:04:55,909 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-20 04:04:55,909 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 04:04:55,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-20 04:04:55,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-20 04:04:55,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:04:55,910 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-20 04:04:55,910 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:04:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:04:55,911 INFO L82 PathProgramCache]: Analyzing trace with hash 921957070, now seen corresponding path program 1 times [2019-11-20 04:04:55,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:04:55,911 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596178732] [2019-11-20 04:04:55,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:04:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:04:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:04:56,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596178732] [2019-11-20 04:04:56,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:04:56,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:04:56,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646312705] [2019-11-20 04:04:56,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 04:04:56,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:04:56,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:04:56,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:04:56,174 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-11-20 04:04:56,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:04:56,262 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-11-20 04:04:56,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:04:56,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-20 04:04:56,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:04:56,263 INFO L225 Difference]: With dead ends: 7 [2019-11-20 04:04:56,263 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:04:56,264 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:04:56,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:04:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:04:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:04:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:04:56,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-11-20 04:04:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:04:56,265 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:04:56,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 04:04:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:04:56,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:04:56,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 04:04:56,288 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 04:04:56,289 INFO L447 ceAbstractionStarter]: At program point L15(lines 9 16) the Hoare annotation is: true [2019-11-20 04:04:56,289 INFO L444 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2019-11-20 04:04:56,289 INFO L440 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 (let ((.cse0 (div ULTIMATE.start_main_~x~0 4))) (+ (* 4 .cse0) (* 4294967296 (div (+ (* .cse0 (- 4)) ULTIMATE.start_main_~x~0) 4294967296))))) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-20 04:04:56,289 INFO L444 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-11-20 04:04:56,290 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-20 04:04:56,290 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 04:04:56,290 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 04:04:56,290 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-20 04:04:56,290 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-20 04:04:56,290 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-20 04:04:56,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:04:56 BoogieIcfgContainer [2019-11-20 04:04:56,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:04:56,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:04:56,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:04:56,305 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:04:56,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:04:55" (3/4) ... [2019-11-20 04:04:56,309 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:04:56,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-20 04:04:56,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:04:56,358 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b8feb2dd-6930-4f56-84df-3a61a25e9012/bin/uautomizer/witness.graphml [2019-11-20 04:04:56,358 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:04:56,360 INFO L168 Benchmark]: Toolchain (without parser) took 1405.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -132.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:56,361 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:56,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:56,362 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:56,363 INFO L168 Benchmark]: Boogie Preprocessor took 17.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:56,363 INFO L168 Benchmark]: RCFGBuilder took 211.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:56,364 INFO L168 Benchmark]: TraceAbstraction took 711.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:04:56,365 INFO L168 Benchmark]: Witness Printer took 53.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:04:56,368 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 366.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -189.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.12 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 211.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 711.19 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 11.5 GB. * Witness Printer took 53.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x <= 4 * (x / 4) + 4294967296 * ((x / 4 * -4 + x) / 4294967296) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 5 NumberOfFragments, 25 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 386 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...