./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/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 64bit --witnessprinter.graph.data.programhash 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:57:49,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:57:49,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:57:49,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:57:49,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:57:49,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:57:49,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:57:49,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:57:49,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:57:49,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:57:49,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:57:49,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:57:49,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:57:49,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:57:49,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:57:49,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:57:49,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:57:49,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:57:49,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:57:49,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:57:49,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:57:49,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:57:49,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:57:49,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:57:49,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:57:49,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:57:49,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:57:49,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:57:49,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:57:49,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:57:49,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:57:49,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:57:49,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:57:49,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:57:49,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:57:49,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:57:49,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:57:49,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:57:49,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:57:49,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:57:49,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:57:49,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-11-15 23:57:49,310 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:57:49,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:57:49,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:57:49,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:57:49,323 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:57:49,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:57:49,323 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:57:49,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:57:49,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:57:49,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:57:49,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:57:49,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:57:49,325 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-15 23:57:49,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:57:49,325 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:57:49,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:57:49,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:57:49,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:57:49,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:57:49,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:57:49,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:57:49,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:57:49,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:57:49,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:57:49,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:57:49,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:57:49,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:57:49,330 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_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b2cc94eb5b8374a9980482fd0dfec59d6d2cf62 [2019-11-15 23:57:49,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:57:49,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:57:49,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:57:49,380 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:57:49,380 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:57:49,380 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c [2019-11-15 23:57:49,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/data/6c3976905/91303d50d32b4ae8914bc0a5dd0ff7e5/FLAGca2d22474 [2019-11-15 23:57:49,818 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:57:49,818 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2-modified1000.c [2019-11-15 23:57:49,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/data/6c3976905/91303d50d32b4ae8914bc0a5dd0ff7e5/FLAGca2d22474 [2019-11-15 23:57:50,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/data/6c3976905/91303d50d32b4ae8914bc0a5dd0ff7e5 [2019-11-15 23:57:50,260 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:57:50,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:57:50,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:57:50,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:57:50,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:57:50,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33126348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50, skipping insertion in model container [2019-11-15 23:57:50,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,277 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:57:50,291 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:57:50,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:57:50,541 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:57:50,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:57:50,576 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:57:50,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50 WrapperNode [2019-11-15 23:57:50,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:57:50,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:57:50,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:57:50,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:57:50,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:57:50,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:57:50,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:57:50,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:57:50,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... [2019-11-15 23:57:50,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:57:50,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:57:50,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:57:50,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:57:50,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/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 [2019-11-15 23:57:50,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:57:50,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:57:50,842 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:57:50,842 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 23:57:50,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:57:50 BoogieIcfgContainer [2019-11-15 23:57:50,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:57:50,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:57:50,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:57:50,847 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:57:50,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:57:50" (1/3) ... [2019-11-15 23:57:50,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40410119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:57:50, skipping insertion in model container [2019-11-15 23:57:50,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:57:50" (2/3) ... [2019-11-15 23:57:50,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40410119 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:57:50, skipping insertion in model container [2019-11-15 23:57:50,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:57:50" (3/3) ... [2019-11-15 23:57:50,850 INFO L109 eAbstractionObserver]: Analyzing ICFG Urban-WST2013-Fig2-modified1000.c [2019-11-15 23:57:50,859 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:57:50,865 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-15 23:57:50,879 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-15 23:57:50,911 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:57:50,912 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:57:50,912 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:57:50,912 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:57:50,912 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:57:50,912 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:57:50,912 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:57:50,913 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:57:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-15 23:57:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:57:50,936 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:50,936 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:57:50,947 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:57:50,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:50,954 INFO L82 PathProgramCache]: Analyzing trace with hash 963476, now seen corresponding path program 1 times [2019-11-15 23:57:50,962 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:50,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143343699] [2019-11-15 23:57:50,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:50,963 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:50,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:51,073 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143343699] [2019-11-15 23:57:51,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:57:51,074 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 23:57:51,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420671745] [2019-11-15 23:57:51,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:57:51,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:57:51,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:57:51,091 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-15 23:57:51,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:51,146 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2019-11-15 23:57:51,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:57:51,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-15 23:57:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:51,155 INFO L225 Difference]: With dead ends: 32 [2019-11-15 23:57:51,156 INFO L226 Difference]: Without dead ends: 14 [2019-11-15 23:57:51,158 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:57:51,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-15 23:57:51,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-15 23:57:51,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-15 23:57:51,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-15 23:57:51,184 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2019-11-15 23:57:51,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:51,184 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-15 23:57:51,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:57:51,184 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-15 23:57:51,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-15 23:57:51,185 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:51,185 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-15 23:57:51,185 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:57:51,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:51,186 INFO L82 PathProgramCache]: Analyzing trace with hash 963531, now seen corresponding path program 1 times [2019-11-15 23:57:51,186 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:51,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676431124] [2019-11-15 23:57:51,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,186 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:51,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676431124] [2019-11-15 23:57:51,210 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:57:51,210 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:57:51,210 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670524167] [2019-11-15 23:57:51,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:57:51,211 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:51,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:57:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:57:51,211 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 3 states. [2019-11-15 23:57:51,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:51,232 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-15 23:57:51,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:57:51,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-15 23:57:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:51,233 INFO L225 Difference]: With dead ends: 15 [2019-11-15 23:57:51,234 INFO L226 Difference]: Without dead ends: 14 [2019-11-15 23:57:51,234 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:57:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-15 23:57:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-15 23:57:51,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-15 23:57:51,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-15 23:57:51,238 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 4 [2019-11-15 23:57:51,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:51,238 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-15 23:57:51,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:57:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-11-15 23:57:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 23:57:51,238 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:51,238 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:57:51,239 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:57:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:51,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1360166603, now seen corresponding path program 1 times [2019-11-15 23:57:51,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:51,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758426495] [2019-11-15 23:57:51,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,240 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:51,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:51,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758426495] [2019-11-15 23:57:51,274 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839625408] [2019-11-15 23:57:51,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-15 23:57:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:57:51,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:57:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:57:51,331 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:57:51,331 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2019-11-15 23:57:51,331 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702914480] [2019-11-15 23:57:51,331 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:57:51,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:51,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:57:51,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:57:51,332 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 3 states. [2019-11-15 23:57:51,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:51,345 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-15 23:57:51,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:57:51,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-15 23:57:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:51,346 INFO L225 Difference]: With dead ends: 13 [2019-11-15 23:57:51,346 INFO L226 Difference]: Without dead ends: 12 [2019-11-15 23:57:51,347 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:57:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-15 23:57:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-15 23:57:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-15 23:57:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-15 23:57:51,350 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2019-11-15 23:57:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:51,350 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-15 23:57:51,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:57:51,351 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-11-15 23:57:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 23:57:51,351 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:51,351 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:57:51,557 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:57:51,557 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:57:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:51,557 INFO L82 PathProgramCache]: Analyzing trace with hash 784508327, now seen corresponding path program 1 times [2019-11-15 23:57:51,557 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:51,558 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341634202] [2019-11-15 23:57:51,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,558 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:57:51,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341634202] [2019-11-15 23:57:51,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624892502] [2019-11-15 23:57:51,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:57:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:57:51,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:57:51,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:57:51,655 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 23:57:51,655 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2019-11-15 23:57:51,655 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003820370] [2019-11-15 23:57:51,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:57:51,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:51,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:57:51,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:57:51,656 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 3 states. [2019-11-15 23:57:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:51,664 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-15 23:57:51,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:57:51,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-15 23:57:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:51,665 INFO L225 Difference]: With dead ends: 12 [2019-11-15 23:57:51,666 INFO L226 Difference]: Without dead ends: 11 [2019-11-15 23:57:51,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:57:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-15 23:57:51,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-15 23:57:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-15 23:57:51,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-15 23:57:51,669 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2019-11-15 23:57:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:51,669 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-15 23:57:51,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:57:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-15 23:57:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 23:57:51,670 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:57:51,670 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-15 23:57:51,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 23:57:51,875 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-15 23:57:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:57:51,876 INFO L82 PathProgramCache]: Analyzing trace with hash 784510025, now seen corresponding path program 1 times [2019-11-15 23:57:51,876 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:57:51,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438770766] [2019-11-15 23:57:51,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:57:51,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:57:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:57:51,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 23:57:51,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438770766] [2019-11-15 23:57:51,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:57:51,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:57:51,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555549267] [2019-11-15 23:57:51,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-15 23:57:51,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:57:51,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 23:57:51,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:57:51,907 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 3 states. [2019-11-15 23:57:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:57:51,934 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-15 23:57:51,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:57:51,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-15 23:57:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:57:51,936 INFO L225 Difference]: With dead ends: 11 [2019-11-15 23:57:51,936 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 23:57:51,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 23:57:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 23:57:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 23:57:51,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 23:57:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 23:57:51,937 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-15 23:57:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:57:51,937 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:57:51,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-15 23:57:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:57:51,938 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 23:57:51,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-15 23:57:51,985 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-15 23:57:51,985 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-15 23:57:51,985 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-15 23:57:51,986 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 23) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x1~0 10) (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) (<= ULTIMATE.start_main_~x2~0 1000)) [2019-11-15 23:57:51,986 INFO L443 ceAbstractionStarter]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2019-11-15 23:57:51,986 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 25) the Hoare annotation is: (<= 0 (+ ULTIMATE.start_main_~x1~0 2147483648)) [2019-11-15 23:57:51,986 INFO L443 ceAbstractionStarter]: For program point L19-3(lines 19 25) no Hoare annotation was computed. [2019-11-15 23:57:51,986 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-15 23:57:51,986 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-15 23:57:51,987 INFO L446 ceAbstractionStarter]: At program point L26(lines 14 27) the Hoare annotation is: true [2019-11-15 23:57:51,987 INFO L443 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2019-11-15 23:57:51,987 INFO L443 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2019-11-15 23:57:51,987 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-15 23:57:51,987 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2019-11-15 23:57:51,987 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2019-11-15 23:57:52,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:57:52 BoogieIcfgContainer [2019-11-15 23:57:52,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:57:52,007 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:57:52,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:57:52,007 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:57:52,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:57:50" (3/4) ... [2019-11-15 23:57:52,011 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 23:57:52,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 23:57:52,022 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-15 23:57:52,083 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c8bba0f8-1f4c-4fe5-ab77-b84efed3a469/bin/uautomizer/witness.graphml [2019-11-15 23:57:52,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:57:52,086 INFO L168 Benchmark]: Toolchain (without parser) took 1823.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 948.8 MB in the beginning and 1.0 GB in the end (delta: -86.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:52,086 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:57:52,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:52,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.70 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. [2019-11-15 23:57:52,087 INFO L168 Benchmark]: Boogie Preprocessor took 22.67 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. [2019-11-15 23:57:52,088 INFO L168 Benchmark]: RCFGBuilder took 213.78 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:52,088 INFO L168 Benchmark]: TraceAbstraction took 1161.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:57:52,088 INFO L168 Benchmark]: Witness Printer took 77.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:57:52,091 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 314.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 948.8 MB in the beginning and 1.1 GB in the end (delta: -168.4 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.70 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 22.67 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 213.78 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1161.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. * Witness Printer took 77.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 <= x1 + 2147483648 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (x1 <= 10 && 0 <= x1 + 2147483648) && x2 <= 1000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 4 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 14 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 18 HoareAnnotationTreeSize, 3 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 643 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 5/7 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...