./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/genady.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_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/genady.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 6938b5c805400363799492c040263d9022406929 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:31:59,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:31:59,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:31:59,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:31:59,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:31:59,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:31:59,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:31:59,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:31:59,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:31:59,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:31:59,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:31:59,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:31:59,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:31:59,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:31:59,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:31:59,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:31:59,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:31:59,226 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:31:59,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:31:59,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:31:59,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:31:59,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:31:59,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:31:59,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:31:59,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:31:59,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:31:59,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:31:59,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:31:59,235 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:31:59,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:31:59,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:31:59,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:31:59,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:31:59,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:31:59,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:31:59,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:31:59,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:31:59,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:31:59,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:31:59,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:31:59,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:31:59,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 15:31:59,250 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:31:59,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:31:59,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:31:59,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:31:59,251 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:31:59,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:31:59,252 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:31:59,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:31:59,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:31:59,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:31:59,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:31:59,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:31:59,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:31:59,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:31:59,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:31:59,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:31:59,254 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_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 -> 6938b5c805400363799492c040263d9022406929 [2019-12-07 15:31:59,350 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:31:59,358 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:31:59,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:31:59,361 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:31:59,361 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:31:59,361 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/genady.c [2019-12-07 15:31:59,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/data/7bd7175d0/212b84805f004590898f684c6ef55437/FLAGc60ad34fe [2019-12-07 15:31:59,755 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:31:59,755 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/sv-benchmarks/c/termination-crafted-lit/genady.c [2019-12-07 15:31:59,759 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/data/7bd7175d0/212b84805f004590898f684c6ef55437/FLAGc60ad34fe [2019-12-07 15:32:00,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/data/7bd7175d0/212b84805f004590898f684c6ef55437 [2019-12-07 15:32:00,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:32:00,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:32:00,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:32:00,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:32:00,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:32:00,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d852d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00, skipping insertion in model container [2019-12-07 15:32:00,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:32:00,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:32:00,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:32:00,299 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:32:00,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:32:00,348 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:32:00,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00 WrapperNode [2019-12-07 15:32:00,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:32:00,349 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:32:00,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:32:00,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:32:00,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:32:00,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:32:00,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:32:00,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:32:00,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... [2019-12-07 15:32:00,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:32:00,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:32:00,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:32:00,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:32:00,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 15:32:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:32:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:32:00,531 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:32:00,532 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 15:32:00,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:32:00 BoogieIcfgContainer [2019-12-07 15:32:00,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:32:00,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:32:00,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:32:00,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:32:00,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:32:00" (1/3) ... [2019-12-07 15:32:00,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308e5f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:32:00, skipping insertion in model container [2019-12-07 15:32:00,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:32:00" (2/3) ... [2019-12-07 15:32:00,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308e5f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:32:00, skipping insertion in model container [2019-12-07 15:32:00,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:32:00" (3/3) ... [2019-12-07 15:32:00,538 INFO L109 eAbstractionObserver]: Analyzing ICFG genady.c [2019-12-07 15:32:00,545 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:32:00,550 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 15:32:00,560 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 15:32:00,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:32:00,575 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:32:00,575 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:32:00,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:32:00,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:32:00,575 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:32:00,575 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:32:00,575 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:32:00,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 15:32:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2019-12-07 15:32:00,588 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,588 INFO L410 BasicCegarLoop]: trace histogram [1, 1] [2019-12-07 15:32:00,589 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,592 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-12-07 15:32:00,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201487601] [2019-12-07 15:32:00,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,687 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 15:32:00,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201487601] [2019-12-07 15:32:00,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:32:00,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:32:00,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358244840] [2019-12-07 15:32:00,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:32:00,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:00,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:32:00,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:32:00,703 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 3 states. [2019-12-07 15:32:00,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:00,736 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-12-07 15:32:00,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:32:00,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2019-12-07 15:32:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:00,743 INFO L225 Difference]: With dead ends: 22 [2019-12-07 15:32:00,743 INFO L226 Difference]: Without dead ends: 13 [2019-12-07 15:32:00,745 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 15:32:00,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-12-07 15:32:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-12-07 15:32:00,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 15:32:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-12-07 15:32:00,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 2 [2019-12-07 15:32:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:00,766 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-12-07 15:32:00,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:32:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-12-07 15:32:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 15:32:00,766 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,766 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 15:32:00,767 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,767 INFO L82 PathProgramCache]: Analyzing trace with hash 30977, now seen corresponding path program 1 times [2019-12-07 15:32:00,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720029815] [2019-12-07 15:32:00,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,782 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 15:32:00,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720029815] [2019-12-07 15:32:00,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:32:00,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:32:00,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699735413] [2019-12-07 15:32:00,785 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:32:00,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:00,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:32:00,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:32:00,785 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2019-12-07 15:32:00,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:00,813 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-12-07 15:32:00,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:32:00,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 15:32:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:00,814 INFO L225 Difference]: With dead ends: 21 [2019-12-07 15:32:00,814 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 15:32:00,814 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 15:32:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 15:32:00,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2019-12-07 15:32:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:32:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 15:32:00,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 3 [2019-12-07 15:32:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:00,818 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 15:32:00,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:32:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 15:32:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 15:32:00,818 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,818 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 15:32:00,818 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,819 INFO L82 PathProgramCache]: Analyzing trace with hash 29770307, now seen corresponding path program 1 times [2019-12-07 15:32:00,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571314473] [2019-12-07 15:32:00,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,830 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 15:32:00,830 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571314473] [2019-12-07 15:32:00,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:32:00,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:32:00,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259080699] [2019-12-07 15:32:00,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:32:00,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:32:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:32:00,831 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2019-12-07 15:32:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:00,847 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-12-07 15:32:00,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:32:00,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 15:32:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:00,848 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:32:00,848 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:32:00,849 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 15:32:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:32:00,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-12-07 15:32:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-12-07 15:32:00,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-12-07 15:32:00,851 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2019-12-07 15:32:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:00,852 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-12-07 15:32:00,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:32:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-12-07 15:32:00,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:32:00,852 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,852 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:32:00,852 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash 922879565, now seen corresponding path program 1 times [2019-12-07 15:32:00,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101584582] [2019-12-07 15:32:00,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,865 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 15:32:00,865 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101584582] [2019-12-07 15:32:00,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:32:00,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:32:00,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131421952] [2019-12-07 15:32:00,866 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:32:00,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:00,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:32:00,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:32:00,866 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2019-12-07 15:32:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:00,876 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-12-07 15:32:00,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:32:00,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 15:32:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:00,876 INFO L225 Difference]: With dead ends: 17 [2019-12-07 15:32:00,876 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 15:32:00,877 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 15:32:00,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 15:32:00,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 15:32:00,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 15:32:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 15:32:00,879 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2019-12-07 15:32:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:00,880 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 15:32:00,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:32:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 15:32:00,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:32:00,880 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,880 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:32:00,880 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1455504507, now seen corresponding path program 1 times [2019-12-07 15:32:00,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626052174] [2019-12-07 15:32:00,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,893 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 15:32:00,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626052174] [2019-12-07 15:32:00,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:32:00,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:32:00,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888847188] [2019-12-07 15:32:00,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:32:00,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:00,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:32:00,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:32:00,895 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2019-12-07 15:32:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:00,904 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2019-12-07 15:32:00,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:32:00,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 15:32:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:00,904 INFO L225 Difference]: With dead ends: 16 [2019-12-07 15:32:00,904 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 15:32:00,905 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 15:32:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 15:32:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 15:32:00,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:32:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-12-07 15:32:00,908 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2019-12-07 15:32:00,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:00,908 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-12-07 15:32:00,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:32:00,908 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-12-07 15:32:00,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:32:00,909 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,909 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:32:00,909 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2124000591, now seen corresponding path program 1 times [2019-12-07 15:32:00,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929167790] [2019-12-07 15:32:00,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,925 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 15:32:00,926 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929167790] [2019-12-07 15:32:00,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:32:00,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 15:32:00,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787610659] [2019-12-07 15:32:00,926 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:32:00,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:00,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:32:00,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 15:32:00,927 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2019-12-07 15:32:00,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:00,942 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-12-07 15:32:00,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:32:00,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 15:32:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:00,943 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:32:00,944 INFO L226 Difference]: Without dead ends: 18 [2019-12-07 15:32:00,944 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 15:32:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-12-07 15:32:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-12-07 15:32:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 15:32:00,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-12-07 15:32:00,947 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2019-12-07 15:32:00,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:00,947 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-12-07 15:32:00,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:32:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-12-07 15:32:00,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:32:00,948 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:00,948 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:32:00,948 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:00,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:00,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1055103537, now seen corresponding path program 1 times [2019-12-07 15:32:00,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:00,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250887875] [2019-12-07 15:32:00,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:00,979 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 15:32:00,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250887875] [2019-12-07 15:32:00,980 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614184526] [2019-12-07 15:32:00,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 15:32:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:01,003 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:32:01,006 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:01,048 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 15:32:01,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:32:01,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2019-12-07 15:32:01,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952076678] [2019-12-07 15:32:01,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:32:01,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:01,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:32:01,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:32:01,050 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 9 states. [2019-12-07 15:32:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:01,131 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-12-07 15:32:01,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:32:01,132 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2019-12-07 15:32:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:01,132 INFO L225 Difference]: With dead ends: 25 [2019-12-07 15:32:01,132 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 15:32:01,133 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2019-12-07 15:32:01,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 15:32:01,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2019-12-07 15:32:01,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 15:32:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-12-07 15:32:01,136 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2019-12-07 15:32:01,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:01,136 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-12-07 15:32:01,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:32:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-12-07 15:32:01,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 15:32:01,136 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:01,136 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 15:32:01,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:01,338 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:01,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:01,339 INFO L82 PathProgramCache]: Analyzing trace with hash 342218611, now seen corresponding path program 1 times [2019-12-07 15:32:01,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:01,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674078932] [2019-12-07 15:32:01,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:01,401 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 15:32:01,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674078932] [2019-12-07 15:32:01,402 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602885123] [2019-12-07 15:32:01,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 15:32:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:01,450 INFO L264 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:32:01,451 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:01,454 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 15:32:01,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:32:01,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 15:32:01,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950562845] [2019-12-07 15:32:01,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:32:01,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:01,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:32:01,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:32:01,455 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2019-12-07 15:32:01,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:01,481 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-12-07 15:32:01,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:32:01,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 15:32:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:01,482 INFO L225 Difference]: With dead ends: 24 [2019-12-07 15:32:01,482 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 15:32:01,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 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 15:32:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 15:32:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-12-07 15:32:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 15:32:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-12-07 15:32:01,487 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2019-12-07 15:32:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:01,487 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-12-07 15:32:01,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:32:01,487 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-12-07 15:32:01,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 15:32:01,488 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:01,488 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1] [2019-12-07 15:32:01,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:01,689 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:01,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:01,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1217672673, now seen corresponding path program 1 times [2019-12-07 15:32:01,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:01,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862804121] [2019-12-07 15:32:01,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:01,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:32:01,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862804121] [2019-12-07 15:32:01,708 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231649700] [2019-12-07 15:32:01,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 15:32:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:01,725 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:32:01,725 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:32:01,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:32:01,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2019-12-07 15:32:01,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560038682] [2019-12-07 15:32:01,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:32:01,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:01,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:32:01,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:32:01,729 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2019-12-07 15:32:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:01,745 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-12-07 15:32:01,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:32:01,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2019-12-07 15:32:01,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:01,746 INFO L225 Difference]: With dead ends: 26 [2019-12-07 15:32:01,746 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:32:01,746 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 15:32:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:32:01,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:32:01,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:32:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-12-07 15:32:01,749 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 15 [2019-12-07 15:32:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:01,749 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-12-07 15:32:01,749 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:32:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-12-07 15:32:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 15:32:01,750 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:01,750 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1] [2019-12-07 15:32:01,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:01,951 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:01,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:01,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1952333055, now seen corresponding path program 2 times [2019-12-07 15:32:01,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:01,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136581845] [2019-12-07 15:32:01,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:02,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:32:02,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136581845] [2019-12-07 15:32:02,018 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509904079] [2019-12-07 15:32:02,018 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 15:32:02,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:32:02,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:32:02,035 INFO L264 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:32:02,035 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:32:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:32:02,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 11 [2019-12-07 15:32:02,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446891351] [2019-12-07 15:32:02,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 15:32:02,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 15:32:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:32:02,090 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2019-12-07 15:32:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:02,215 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-12-07 15:32:02,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:32:02,215 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2019-12-07 15:32:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:02,216 INFO L225 Difference]: With dead ends: 32 [2019-12-07 15:32:02,216 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 15:32:02,216 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2019-12-07 15:32:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 15:32:02,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2019-12-07 15:32:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-12-07 15:32:02,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-12-07 15:32:02,219 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2019-12-07 15:32:02,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:02,219 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-12-07 15:32:02,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 15:32:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-12-07 15:32:02,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:32:02,220 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:02,220 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1] [2019-12-07 15:32:02,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:02,422 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:02,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:02,423 INFO L82 PathProgramCache]: Analyzing trace with hash 708643907, now seen corresponding path program 2 times [2019-12-07 15:32:02,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:02,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092842530] [2019-12-07 15:32:02,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:02,484 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 15:32:02,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092842530] [2019-12-07 15:32:02,484 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141906950] [2019-12-07 15:32:02,484 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/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 15:32:02,504 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:32:02,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:32:02,505 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:32:02,506 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:02,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:32:02,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:32:02,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2019-12-07 15:32:02,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593276218] [2019-12-07 15:32:02,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 15:32:02,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:02,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 15:32:02,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:32:02,524 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2019-12-07 15:32:02,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:02,605 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2019-12-07 15:32:02,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 15:32:02,606 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-07 15:32:02,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:02,606 INFO L225 Difference]: With dead ends: 37 [2019-12-07 15:32:02,607 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 15:32:02,607 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=131, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:32:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 15:32:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2019-12-07 15:32:02,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 15:32:02,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-12-07 15:32:02,611 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2019-12-07 15:32:02,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:02,611 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-12-07 15:32:02,611 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 15:32:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-12-07 15:32:02,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:32:02,612 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:02,612 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1] [2019-12-07 15:32:02,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:02,814 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:02,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:02,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1446421327, now seen corresponding path program 2 times [2019-12-07 15:32:02,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:02,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023927309] [2019-12-07 15:32:02,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:02,878 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 15:32:02,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023927309] [2019-12-07 15:32:02,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10373938] [2019-12-07 15:32:02,878 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:02,896 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 15:32:02,896 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:32:02,897 INFO L264 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 15:32:02,898 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:32:02,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:32:02,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2019-12-07 15:32:02,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118080850] [2019-12-07 15:32:02,928 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:32:02,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:02,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:32:02,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:32:02,928 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2019-12-07 15:32:03,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:03,021 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-12-07 15:32:03,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 15:32:03,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2019-12-07 15:32:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:03,022 INFO L225 Difference]: With dead ends: 26 [2019-12-07 15:32:03,022 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:32:03,022 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2019-12-07 15:32:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:32:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-12-07 15:32:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 15:32:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-12-07 15:32:03,026 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2019-12-07 15:32:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:03,026 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-12-07 15:32:03,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:32:03,026 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-12-07 15:32:03,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 15:32:03,027 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:32:03,027 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1] [2019-12-07 15:32:03,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:03,229 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 15:32:03,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:32:03,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1558507471, now seen corresponding path program 3 times [2019-12-07 15:32:03,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:32:03,231 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221906970] [2019-12-07 15:32:03,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:32:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:32:03,282 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 15:32:03,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221906970] [2019-12-07 15:32:03,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356464800] [2019-12-07 15:32:03,282 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:03,298 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 15:32:03,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:32:03,298 INFO L264 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:32:03,299 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:32:03,323 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-12-07 15:32:03,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:32:03,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 11 [2019-12-07 15:32:03,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536361947] [2019-12-07 15:32:03,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:32:03,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:32:03,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:32:03,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:32:03,324 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 5 states. [2019-12-07 15:32:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:32:03,339 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-12-07 15:32:03,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:32:03,340 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-12-07 15:32:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:32:03,340 INFO L225 Difference]: With dead ends: 25 [2019-12-07 15:32:03,340 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:32:03,340 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-12-07 15:32:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:32:03,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:32:03,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:32:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:32:03,341 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-12-07 15:32:03,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:32:03,341 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:32:03,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:32:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:32:03,341 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:32:03,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:32:03,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L242 CegarLoopResult]: At program point L19(lines 11 20) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 (+ ULTIMATE.start_main_~j~0 9999)) [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2019-12-07 15:32:03,616 INFO L246 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L242 CegarLoopResult]: At program point L15-4(lines 15 18) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~j~0))) (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 1)) (<= 10001 .cse0) (<= .cse0 10001) (<= ULTIMATE.start_main_~i~0 (+ ULTIMATE.start_main_~j~0 9999)))) [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point L15-5(lines 15 18) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2019-12-07 15:32:03,617 INFO L246 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2019-12-07 15:32:03,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:32:03 BoogieIcfgContainer [2019-12-07 15:32:03,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:32:03,630 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:32:03,630 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:32:03,630 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:32:03,630 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:32:00" (3/4) ... [2019-12-07 15:32:03,633 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:32:03,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:32:03,641 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 15:32:03,671 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8489b2b7-620e-450a-954a-08bf6a98f8c8/bin/uautomizer/witness.graphml [2019-12-07 15:32:03,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:32:03,673 INFO L168 Benchmark]: Toolchain (without parser) took 3494.86 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -107.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:32:03,673 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:32:03,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:32:03,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.84 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 15:32:03,674 INFO L168 Benchmark]: Boogie Preprocessor took 11.84 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 15:32:03,674 INFO L168 Benchmark]: RCFGBuilder took 150.50 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:32:03,675 INFO L168 Benchmark]: TraceAbstraction took 3096.03 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: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:32:03,675 INFO L168 Benchmark]: Witness Printer took 41.59 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:32:03,677 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -152.4 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.84 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 11.84 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 150.50 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3096.03 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: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.59 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: ((j <= i + 1 && 10001 <= i + j) && i + j <= 10001) && i <= j + 9999 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: i <= j + 9999 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 6 error locations. Result: SAFE, OverallTime: 2.9s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 145 SDslu, 21 SDs, 0 SdLazy, 393 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=10, 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, 13 MinimizatonAttempts, 25 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 26 HoareAnnotationTreeSize, 2 FomulaSimplifications, 71 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 108 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 269 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 249 ConstructedInterpolants, 0 QuantifiedInterpolants, 15709 SizeOfPredicates, 1 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 64/174 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...