./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/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 85017c4a5a64f245bd703090448e8d5785d54b75 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:27:53,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:27:53,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:27:53,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:27:53,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:27:53,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:27:53,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:27:53,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:27:53,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:27:53,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:27:53,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:27:53,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:27:53,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:27:53,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:27:53,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:27:53,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:27:53,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:27:53,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:27:53,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:27:53,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:27:53,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:27:53,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:27:53,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:27:53,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:27:53,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:27:53,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:27:53,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:27:53,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:27:53,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:27:53,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:27:53,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:27:53,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:27:53,258 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:27:53,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:27:53,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:27:53,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:27:53,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:27:53,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:27:53,260 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:27:53,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:27:53,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:27:53,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 17:27:53,270 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:27:53,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:27:53,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:27:53,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:27:53,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 17:27:53,272 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 17:27:53,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:27:53,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:27:53,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:27:53,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:27:53,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 17:27:53,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:27:53,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:27:53,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 17:27:53,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:27:53,274 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_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/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 -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2019-12-07 17:27:53,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:27:53,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:27:53,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:27:53,383 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:27:53,384 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:27:53,384 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2019-12-07 17:27:53,420 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/data/9d768ecde/4e27eb11fedc42e38b0e8f1b626a27df/FLAGbbd9b5b19 [2019-12-07 17:27:53,848 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:27:53,848 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction.c [2019-12-07 17:27:53,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/data/9d768ecde/4e27eb11fedc42e38b0e8f1b626a27df/FLAGbbd9b5b19 [2019-12-07 17:27:53,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/data/9d768ecde/4e27eb11fedc42e38b0e8f1b626a27df [2019-12-07 17:27:53,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:27:53,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:27:53,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:27:53,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:27:53,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:27:53,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:27:53" (1/1) ... [2019-12-07 17:27:53,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e34d148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:53, skipping insertion in model container [2019-12-07 17:27:53,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:27:53" (1/1) ... [2019-12-07 17:27:53,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:27:53,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:27:53,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:27:53,980 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:27:54,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:27:54,032 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:27:54,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54 WrapperNode [2019-12-07 17:27:54,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:27:54,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:27:54,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:27:54,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:27:54,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:27:54,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:27:54,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:27:54,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:27:54,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... [2019-12-07 17:27:54,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:27:54,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:27:54,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:27:54,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:27:54,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/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 [2019-12-07 17:27:54,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:27:54,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:27:54,194 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:27:54,194 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 17:27:54,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:27:54 BoogieIcfgContainer [2019-12-07 17:27:54,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:27:54,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:27:54,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:27:54,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:27:54,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:27:53" (1/3) ... [2019-12-07 17:27:54,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7deb8ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:27:54, skipping insertion in model container [2019-12-07 17:27:54,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:27:54" (2/3) ... [2019-12-07 17:27:54,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7deb8ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:27:54, skipping insertion in model container [2019-12-07 17:27:54,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:27:54" (3/3) ... [2019-12-07 17:27:54,199 INFO L109 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction.c [2019-12-07 17:27:54,205 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:27:54,209 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-12-07 17:27:54,217 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 17:27:54,231 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:27:54,231 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 17:27:54,231 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:27:54,231 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:27:54,231 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:27:54,231 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:27:54,231 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:27:54,231 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:27:54,240 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 17:27:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 17:27:54,244 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:54,244 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 17:27:54,244 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:54,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:54,248 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2019-12-07 17:27:54,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:54,253 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441180738] [2019-12-07 17:27:54,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:54,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441180738] [2019-12-07 17:27:54,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:27:54,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 17:27:54,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652713258] [2019-12-07 17:27:54,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:27:54,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:54,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:27:54,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:27:54,358 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-12-07 17:27:54,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:54,394 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2019-12-07 17:27:54,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:27:54,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 17:27:54,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:54,401 INFO L225 Difference]: With dead ends: 26 [2019-12-07 17:27:54,401 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 17:27:54,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:27:54,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 17:27:54,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 17:27:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:27:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 17:27:54,424 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2019-12-07 17:27:54,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:54,424 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 17:27:54,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:27:54,425 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 17:27:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 17:27:54,425 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:54,425 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 17:27:54,425 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:54,425 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2019-12-07 17:27:54,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:54,426 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934120313] [2019-12-07 17:27:54,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:54,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:54,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934120313] [2019-12-07 17:27:54,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:27:54,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 17:27:54,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363458526] [2019-12-07 17:27:54,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:27:54,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:54,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:27:54,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:27:54,450 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2019-12-07 17:27:54,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:54,487 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-12-07 17:27:54,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:27:54,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 17:27:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:54,488 INFO L225 Difference]: With dead ends: 17 [2019-12-07 17:27:54,488 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 17:27:54,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:27:54,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 17:27:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2019-12-07 17:27:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 17:27:54,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-12-07 17:27:54,491 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2019-12-07 17:27:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:54,491 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-12-07 17:27:54,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:27:54,492 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-12-07 17:27:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 17:27:54,492 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:54,492 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 17:27:54,492 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:54,492 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2019-12-07 17:27:54,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:54,493 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793999958] [2019-12-07 17:27:54,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:54,507 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793999958] [2019-12-07 17:27:54,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:27:54,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 17:27:54,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242448749] [2019-12-07 17:27:54,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:27:54,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:54,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:27:54,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:27:54,508 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 3 states. [2019-12-07 17:27:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:54,518 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 17:27:54,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:27:54,519 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 17:27:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:54,519 INFO L225 Difference]: With dead ends: 14 [2019-12-07 17:27:54,519 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 17:27:54,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:27:54,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 17:27:54,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 17:27:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 17:27:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 17:27:54,523 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2019-12-07 17:27:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:54,523 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 17:27:54,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:27:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 17:27:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 17:27:54,524 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:54,524 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-12-07 17:27:54,524 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:54,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:54,525 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2019-12-07 17:27:54,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:54,525 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147095038] [2019-12-07 17:27:54,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:54,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147095038] [2019-12-07 17:27:54,567 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795264206] [2019-12-07 17:27:54,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:54,588 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:27:54,591 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:54,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 17:27:54,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2019-12-07 17:27:54,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012376201] [2019-12-07 17:27:54,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:27:54,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:54,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:27:54,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:27:54,645 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-12-07 17:27:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:54,682 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 17:27:54,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:27:54,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-12-07 17:27:54,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:54,683 INFO L225 Difference]: With dead ends: 14 [2019-12-07 17:27:54,683 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 17:27:54,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:27:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 17:27:54,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-12-07 17:27:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 17:27:54,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 17:27:54,686 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2019-12-07 17:27:54,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:54,687 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 17:27:54,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:27:54,687 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 17:27:54,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 17:27:54,687 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:54,687 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-12-07 17:27:54,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:54,889 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:54,890 INFO L82 PathProgramCache]: Analyzing trace with hash 720506461, now seen corresponding path program 1 times [2019-12-07 17:27:54,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:54,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088614209] [2019-12-07 17:27:54,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:54,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:54,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088614209] [2019-12-07 17:27:54,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092199925] [2019-12-07 17:27:54,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/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 [2019-12-07 17:27:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:55,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:55,022 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:55,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 17:27:55,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2019-12-07 17:27:55,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996998794] [2019-12-07 17:27:55,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:27:55,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:55,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:27:55,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:27:55,084 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2019-12-07 17:27:55,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:55,124 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 17:27:55,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:27:55,124 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 17:27:55,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:55,125 INFO L225 Difference]: With dead ends: 12 [2019-12-07 17:27:55,125 INFO L226 Difference]: Without dead ends: 11 [2019-12-07 17:27:55,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:27:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-12-07 17:27:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 17:27:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 17:27:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2019-12-07 17:27:55,127 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2019-12-07 17:27:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:55,127 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2019-12-07 17:27:55,127 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:27:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2019-12-07 17:27:55,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:27:55,128 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:55,128 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2019-12-07 17:27:55,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:55,329 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2019-12-07 17:27:55,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:55,330 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173716335] [2019-12-07 17:27:55,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:55,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:55,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173716335] [2019-12-07 17:27:55,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934827457] [2019-12-07 17:27:55,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:55,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 17:27:55,392 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:55,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:27:55,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 17:27:55,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760571941] [2019-12-07 17:27:55,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 17:27:55,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:55,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 17:27:55,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:27:55,395 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2019-12-07 17:27:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:55,407 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-12-07 17:27:55,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 17:27:55,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 17:27:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:55,408 INFO L225 Difference]: With dead ends: 18 [2019-12-07 17:27:55,408 INFO L226 Difference]: Without dead ends: 17 [2019-12-07 17:27:55,408 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 17:27:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-12-07 17:27:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-12-07 17:27:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 17:27:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 17:27:55,411 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2019-12-07 17:27:55,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:55,411 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 17:27:55,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 17:27:55,411 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 17:27:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 17:27:55,411 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:55,411 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2019-12-07 17:27:55,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:55,613 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:55,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2019-12-07 17:27:55,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:55,615 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854993116] [2019-12-07 17:27:55,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:55,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:55,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854993116] [2019-12-07 17:27:55,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118233962] [2019-12-07 17:27:55,655 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:55,672 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 17:27:55,672 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:27:55,672 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:27:55,673 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:55,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:27:55,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-12-07 17:27:55,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033835982] [2019-12-07 17:27:55,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:27:55,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:55,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:27:55,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:27:55,677 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2019-12-07 17:27:55,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:55,698 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2019-12-07 17:27:55,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:27:55,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-12-07 17:27:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:55,699 INFO L225 Difference]: With dead ends: 23 [2019-12-07 17:27:55,699 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 17:27:55,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:27:55,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 17:27:55,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-12-07 17:27:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 17:27:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2019-12-07 17:27:55,702 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2019-12-07 17:27:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:55,702 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2019-12-07 17:27:55,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:27:55,702 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2019-12-07 17:27:55,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:27:55,703 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:27:55,703 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2019-12-07 17:27:55,903 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:55,904 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 17:27:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:27:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2019-12-07 17:27:55,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:27:55,904 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415669732] [2019-12-07 17:27:55,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:27:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:27:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:55,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415669732] [2019-12-07 17:27:55,935 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881617669] [2019-12-07 17:27:55,935 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:55,951 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-12-07 17:27:55,952 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:27:55,952 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:27:55,953 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:27:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:27:56,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:27:56,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7] total 11 [2019-12-07 17:27:56,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431467974] [2019-12-07 17:27:56,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 17:27:56,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:27:56,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 17:27:56,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-12-07 17:27:56,034 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2019-12-07 17:27:56,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:27:56,297 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-12-07 17:27:56,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 17:27:56,298 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2019-12-07 17:27:56,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:27:56,298 INFO L225 Difference]: With dead ends: 28 [2019-12-07 17:27:56,298 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 17:27:56,299 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2019-12-07 17:27:56,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 17:27:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 17:27:56,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 17:27:56,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 17:27:56,299 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-12-07 17:27:56,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:27:56,300 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:27:56,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 17:27:56,300 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:27:56,300 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 17:27:56,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 17:27:56,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 17:27:56,623 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-12-07 17:27:56,623 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 17:27:56,623 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 17:27:56,623 INFO L246 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L249 CegarLoopResult]: At program point L22(lines 14 23) the Hoare annotation is: true [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 17:27:56,624 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 17:27:56,625 INFO L242 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~y~0 (+ (div (+ (* ULTIMATE.start_main_~x~0 (- 1)) 2147483647) 2) 1)) .cse0 (<= ULTIMATE.start_main_~y~0 2147483647)) (and (<= ULTIMATE.start_main_~y~0 2) .cse0 (<= ULTIMATE.start_main_~x~0 2147483646)) (and (<= (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) 2147483647) (<= ULTIMATE.start_main_~y~0 3) .cse0))) [2019-12-07 17:27:56,625 INFO L246 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2019-12-07 17:27:56,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:27:56 BoogieIcfgContainer [2019-12-07 17:27:56,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:27:56,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:27:56,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:27:56,637 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:27:56,637 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:27:54" (3/4) ... [2019-12-07 17:27:56,640 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 17:27:56,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 17:27:56,647 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 17:27:56,672 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8aff52f8-b24e-4374-bdc6-cdb8ae1cdcfa/bin/uautomizer/witness.graphml [2019-12-07 17:27:56,672 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:27:56,674 INFO L168 Benchmark]: Toolchain (without parser) took 2810.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 943.5 MB in the beginning and 875.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 167.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:56,674 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:56,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -154.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:56,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:56,675 INFO L168 Benchmark]: Boogie Preprocessor took 11.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:56,675 INFO L168 Benchmark]: RCFGBuilder took 129.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:56,675 INFO L168 Benchmark]: TraceAbstraction took 2441.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 875.9 MB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:27:56,676 INFO L168 Benchmark]: Witness Printer took 35.49 ms. Allocated memory is still 1.1 GB. Free memory is still 875.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:27:56,677 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 169.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -154.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.79 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 129.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2441.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 875.9 MB in the end (delta: 202.5 MB). Peak memory consumption was 202.5 MB. Max. memory is 11.5 GB. * Witness Printer took 35.49 ms. Allocated memory is still 1.1 GB. Free memory is still 875.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: 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: 18]: Loop Invariant Derived loop invariant: (((y <= (x * -1 + 2147483647) / 2 + 1 && 1 <= y) && y <= 2147483647) || ((y <= 2 && 1 <= y) && x <= 2147483646)) || ((x + y <= 2147483647 && y <= 3) && 1 <= y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 26 SDtfs, 68 SDslu, 10 SDs, 0 SdLazy, 211 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=7, 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, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 42 HoareAnnotationTreeSize, 2 FomulaSimplifications, 67 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 124 ConstructedInterpolants, 3 QuantifiedInterpolants, 6355 SizeOfPredicates, 2 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 5/98 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...