./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invariants/mod4.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/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-cad4683 [2019-10-22 09:01:01,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:01,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:01,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:01,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:01,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:01,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:01,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:01,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:01,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:01,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:01,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:01,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:01,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:01,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:01,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:01,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:01,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:01,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:01,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:01,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:01,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:01,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:01,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:01,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:01,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:01,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:01,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:01,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:01,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:01,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:01,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:01,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:01,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:01,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:01,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:01,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:01,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:01,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:01,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:01,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:01,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:01:01,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:01,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:01,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:01,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:01,237 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:01,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:01,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:01:01,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:01,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:01:01,238 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:01,238 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:01,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:01,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:01,239 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:01:01,239 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:01,239 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:01,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:01,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:01,240 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:01,240 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:01,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:01,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:01,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:01,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:01,241 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:01,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:01,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:01,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:01,242 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/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/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 [2019-10-22 09:01:01,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:01,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:01,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:01,285 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:01,285 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:01,286 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/../../sv-benchmarks/c/loop-invariants/mod4.c [2019-10-22 09:01:01,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/data/67ac70bff/7bcafe3387ac48e084ba42676b7f4fd1/FLAG95051a944 [2019-10-22 09:01:01,710 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:01,710 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/sv-benchmarks/c/loop-invariants/mod4.c [2019-10-22 09:01:01,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/data/67ac70bff/7bcafe3387ac48e084ba42676b7f4fd1/FLAG95051a944 [2019-10-22 09:01:01,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/data/67ac70bff/7bcafe3387ac48e084ba42676b7f4fd1 [2019-10-22 09:01:01,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:01,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:01,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:01,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:01,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:01,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:01" (1/1) ... [2019-10-22 09:01:01,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3692950b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:01, skipping insertion in model container [2019-10-22 09:01:01,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:01" (1/1) ... [2019-10-22 09:01:01,745 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:01,759 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:01,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:01,920 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:02,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:02,019 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:02,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02 WrapperNode [2019-10-22 09:01:02,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:02,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:02,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:02,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:02,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:02,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:02,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:02,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:02,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... [2019-10-22 09:01:02,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:02,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:02,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:02,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:02,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/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 [2019-10-22 09:01:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:02,279 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:02,279 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 09:01:02,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:02 BoogieIcfgContainer [2019-10-22 09:01:02,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:02,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:02,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:02,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:02,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:01" (1/3) ... [2019-10-22 09:01:02,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d31f6e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:02, skipping insertion in model container [2019-10-22 09:01:02,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:02" (2/3) ... [2019-10-22 09:01:02,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d31f6e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:02, skipping insertion in model container [2019-10-22 09:01:02,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:02" (3/3) ... [2019-10-22 09:01:02,291 INFO L109 eAbstractionObserver]: Analyzing ICFG mod4.c [2019-10-22 09:01:02,299 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:02,305 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:01:02,315 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:01:02,339 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:02,339 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:02,340 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:02,340 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:02,340 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:02,340 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:02,340 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:02,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:02,352 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-10-22 09:01:02,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 09:01:02,357 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:02,357 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 09:01:02,359 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:02,364 INFO L82 PathProgramCache]: Analyzing trace with hash 29954948, now seen corresponding path program 1 times [2019-10-22 09:01:02,372 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:02,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455630087] [2019-10-22 09:01:02,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:02,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:02,373 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:02,449 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455630087] [2019-10-22 09:01:02,450 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:02,450 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 09:01:02,450 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054876289] [2019-10-22 09:01:02,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 09:01:02,454 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:02,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 09:01:02,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 09:01:02,466 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-10-22 09:01:02,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:02,480 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-10-22 09:01:02,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 09:01:02,482 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 09:01:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:02,492 INFO L225 Difference]: With dead ends: 19 [2019-10-22 09:01:02,493 INFO L226 Difference]: Without dead ends: 7 [2019-10-22 09:01:02,496 INFO L600 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 [2019-10-22 09:01:02,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-10-22 09:01:02,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-10-22 09:01:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-10-22 09:01:02,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-10-22 09:01:02,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-10-22 09:01:02,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:02,526 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-10-22 09:01:02,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 09:01:02,526 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-10-22 09:01:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 09:01:02,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:02,528 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 09:01:02,528 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:01:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:02,528 INFO L82 PathProgramCache]: Analyzing trace with hash 921957070, now seen corresponding path program 1 times [2019-10-22 09:01:02,529 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:02,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955722043] [2019-10-22 09:01:02,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:02,529 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:02,529 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:02,727 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955722043] [2019-10-22 09:01:02,727 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:02,727 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 09:01:02,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256607946] [2019-10-22 09:01:02,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:01:02,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:02,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:01:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:01:02,732 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2019-10-22 09:01:02,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:02,775 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-10-22 09:01:02,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 09:01:02,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 09:01:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:02,775 INFO L225 Difference]: With dead ends: 7 [2019-10-22 09:01:02,775 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:01:02,776 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:01:02,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:01:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:01:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:01:02,777 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-10-22 09:01:02,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:02,777 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:01:02,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:01:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:01:02,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:01:02,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 09:01:02,815 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 09:01:02,815 INFO L446 ceAbstractionStarter]: At program point L15(lines 9 16) the Hoare annotation is: true [2019-10-22 09:01:02,816 INFO L443 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2019-10-22 09:01:02,816 INFO L439 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)) [2019-10-22 09:01:02,816 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-10-22 09:01:02,816 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 09:01:02,816 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 09:01:02,816 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 09:01:02,816 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 09:01:02,817 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 09:01:02,817 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-10-22 09:01:02,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:02 BoogieIcfgContainer [2019-10-22 09:01:02,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:02,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:02,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:02,830 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:02,830 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:02" (3/4) ... [2019-10-22 09:01:02,833 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:01:02,840 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 09:01:02,841 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 09:01:02,872 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0660810f-53f7-48f3-9e59-3558cf5f4895/bin/uautomizer/witness.graphml [2019-10-22 09:01:02,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:02,874 INFO L168 Benchmark]: Toolchain (without parser) took 1144.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -127.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:02,874 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:02,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:02,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.30 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. [2019-10-22 09:01:02,876 INFO L168 Benchmark]: Boogie Preprocessor took 18.56 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. [2019-10-22 09:01:02,876 INFO L168 Benchmark]: RCFGBuilder took 212.73 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:02,877 INFO L168 Benchmark]: TraceAbstraction took 548.07 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:02,877 INFO L168 Benchmark]: Witness Printer took 42.53 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. [2019-10-22 09:01:02,879 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 290.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -178.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.30 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 18.56 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 212.73 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 548.07 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: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 42.53 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, 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, 0.1s 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, 0.1s 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...