./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/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 2b89ce5b96ce55081609675201b2a9a116c2941a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:03:19,225 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:03:19,227 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:03:19,234 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:03:19,234 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:03:19,235 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:03:19,236 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:03:19,237 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:03:19,238 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:03:19,239 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:03:19,239 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:03:19,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:03:19,240 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:03:19,241 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:03:19,242 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:03:19,242 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:03:19,243 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:03:19,244 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:03:19,246 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:03:19,247 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:03:19,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:03:19,248 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:03:19,250 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:03:19,250 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:03:19,250 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:03:19,251 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:03:19,252 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:03:19,252 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:03:19,253 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:03:19,254 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:03:19,254 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:03:19,254 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:03:19,254 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:03:19,255 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:03:19,255 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:03:19,256 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:03:19,256 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 12:03:19,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:03:19,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:03:19,266 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 12:03:19,267 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 12:03:19,267 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:03:19,267 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:03:19,267 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:03:19,267 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:03:19,268 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 12:03:19,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 12:03:19,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 12:03:19,269 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/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 -> 2b89ce5b96ce55081609675201b2a9a116c2941a [2018-11-28 12:03:19,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:03:19,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:03:19,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:03:19,303 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:03:19,303 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:03:19,304 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 12:03:19,345 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/data/478ed4929/b76d921130d34c4aa72bec8add18d366/FLAG00d90cc60 [2018-11-28 12:03:19,741 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:03:19,741 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 12:03:19,745 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/data/478ed4929/b76d921130d34c4aa72bec8add18d366/FLAG00d90cc60 [2018-11-28 12:03:19,756 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/data/478ed4929/b76d921130d34c4aa72bec8add18d366 [2018-11-28 12:03:19,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:03:19,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:03:19,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:03:19,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:03:19,762 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:03:19,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee3dc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19, skipping insertion in model container [2018-11-28 12:03:19,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:03:19,784 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:03:19,882 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:03:19,885 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:03:19,898 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:03:19,907 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:03:19,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19 WrapperNode [2018-11-28 12:03:19,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:03:19,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:03:19,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:03:19,908 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:03:19,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:03:19,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:03:19,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:03:19,926 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:03:19,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... [2018-11-28 12:03:19,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:03:19,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:03:19,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:03:19,945 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:03:19,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/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 [2018-11-28 12:03:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 12:03:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 12:03:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:03:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:03:20,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 12:03:20,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 12:03:20,147 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:03:20,147 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 12:03:20,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:20 BoogieIcfgContainer [2018-11-28 12:03:20,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:03:20,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 12:03:20,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 12:03:20,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 12:03:20,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 12:03:19" (1/3) ... [2018-11-28 12:03:20,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6134cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:03:20, skipping insertion in model container [2018-11-28 12:03:20,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:03:19" (2/3) ... [2018-11-28 12:03:20,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6134cdd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 12:03:20, skipping insertion in model container [2018-11-28 12:03:20,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:20" (3/3) ... [2018-11-28 12:03:20,154 INFO L112 eAbstractionObserver]: Analyzing ICFG Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 12:03:20,164 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 12:03:20,171 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 12:03:20,186 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 12:03:20,215 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:03:20,216 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 12:03:20,216 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 12:03:20,216 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 12:03:20,216 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:03:20,217 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:03:20,217 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 12:03:20,217 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:03:20,217 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 12:03:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-28 12:03:20,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 12:03:20,239 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,240 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,242 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,247 INFO L82 PathProgramCache]: Analyzing trace with hash -778806590, now seen corresponding path program 1 times [2018-11-28 12:03:20,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:20,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:03:20,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:03:20,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:03:20,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:20,386 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-11-28 12:03:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:20,437 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-28 12:03:20,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:03:20,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 12:03:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:20,446 INFO L225 Difference]: With dead ends: 35 [2018-11-28 12:03:20,446 INFO L226 Difference]: Without dead ends: 21 [2018-11-28 12:03:20,448 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:20,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-28 12:03:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-28 12:03:20,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-28 12:03:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-28 12:03:20,475 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2018-11-28 12:03:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:20,475 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-28 12:03:20,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:03:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-28 12:03:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 12:03:20,476 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,476 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,476 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1626799533, now seen corresponding path program 1 times [2018-11-28 12:03:20,477 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:20,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:03:20,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:03:20,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:03:20,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:03:20,507 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2018-11-28 12:03:20,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:20,539 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-28 12:03:20,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:03:20,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-28 12:03:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:20,540 INFO L225 Difference]: With dead ends: 26 [2018-11-28 12:03:20,540 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 12:03:20,541 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:03:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 12:03:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-11-28 12:03:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 12:03:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-28 12:03:20,544 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2018-11-28 12:03:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:20,544 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-28 12:03:20,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:03:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-28 12:03:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 12:03:20,545 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,545 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,545 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1108821980, now seen corresponding path program 1 times [2018-11-28 12:03:20,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,546 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:20,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:03:20,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:03:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:03:20,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:20,564 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2018-11-28 12:03:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:20,579 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-28 12:03:20,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:03:20,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 12:03:20,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:20,580 INFO L225 Difference]: With dead ends: 28 [2018-11-28 12:03:20,580 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 12:03:20,581 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:20,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 12:03:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-11-28 12:03:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 12:03:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-28 12:03:20,584 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 9 [2018-11-28 12:03:20,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:20,585 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-28 12:03:20,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:03:20,585 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-28 12:03:20,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 12:03:20,585 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,585 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,586 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,586 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash -13742961, now seen corresponding path program 1 times [2018-11-28 12:03:20,586 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:20,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:03:20,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:03:20,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:03:20,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:20,603 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 3 states. [2018-11-28 12:03:20,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:20,621 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-28 12:03:20,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:03:20,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 12:03:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:20,622 INFO L225 Difference]: With dead ends: 28 [2018-11-28 12:03:20,622 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 12:03:20,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:20,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 12:03:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-11-28 12:03:20,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 12:03:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-28 12:03:20,624 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 10 [2018-11-28 12:03:20,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:20,625 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-28 12:03:20,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:03:20,625 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-28 12:03:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 12:03:20,625 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,625 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,626 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash -426031738, now seen corresponding path program 1 times [2018-11-28 12:03:20,626 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,661 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:20,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:03:20,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:03:20,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:03:20,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:03:20,662 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 4 states. [2018-11-28 12:03:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:20,700 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2018-11-28 12:03:20,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:03:20,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-11-28 12:03:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:20,701 INFO L225 Difference]: With dead ends: 31 [2018-11-28 12:03:20,701 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 12:03:20,702 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:03:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 12:03:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2018-11-28 12:03:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 12:03:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-28 12:03:20,705 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 11 [2018-11-28 12:03:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:20,705 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-28 12:03:20,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:03:20,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-28 12:03:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 12:03:20,706 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,706 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,707 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,707 INFO L82 PathProgramCache]: Analyzing trace with hash -322081935, now seen corresponding path program 1 times [2018-11-28 12:03:20,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:20,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:03:20,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 12:03:20,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:03:20,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:03:20,751 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2018-11-28 12:03:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:20,786 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-28 12:03:20,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:03:20,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 12:03:20,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:20,786 INFO L225 Difference]: With dead ends: 31 [2018-11-28 12:03:20,786 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 12:03:20,787 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:03:20,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 12:03:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2018-11-28 12:03:20,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 12:03:20,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-28 12:03:20,789 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 12 [2018-11-28 12:03:20,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:20,789 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-28 12:03:20,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 12:03:20,790 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-28 12:03:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 12:03:20,790 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:20,790 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:20,790 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:20,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:20,791 INFO L82 PathProgramCache]: Analyzing trace with hash -283092845, now seen corresponding path program 1 times [2018-11-28 12:03:20,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:20,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:20,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:20,823 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:20,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:20,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:20,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:20,926 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:20,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-28 12:03:20,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 12:03:20,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:03:20,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:03:20,928 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2018-11-28 12:03:21,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,005 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-28 12:03:21,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:03:21,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2018-11-28 12:03:21,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,005 INFO L225 Difference]: With dead ends: 34 [2018-11-28 12:03:21,005 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:03:21,006 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:03:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:03:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2018-11-28 12:03:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 12:03:21,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-28 12:03:21,009 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2018-11-28 12:03:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,009 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-28 12:03:21,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 12:03:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-28 12:03:21,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-28 12:03:21,010 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,010 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,010 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,011 INFO L82 PathProgramCache]: Analyzing trace with hash -185943556, now seen corresponding path program 1 times [2018-11-28 12:03:21,011 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,034 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:21,034 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:21,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:03:21,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-28 12:03:21,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 12:03:21,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 12:03:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:03:21,100 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 8 states. [2018-11-28 12:03:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,213 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-11-28 12:03:21,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 12:03:21,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-28 12:03:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,214 INFO L225 Difference]: With dead ends: 32 [2018-11-28 12:03:21,214 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 12:03:21,214 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:03:21,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 12:03:21,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-11-28 12:03:21,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 12:03:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-28 12:03:21,217 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 15 [2018-11-28 12:03:21,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,217 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-28 12:03:21,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 12:03:21,217 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-28 12:03:21,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 12:03:21,218 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,218 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,218 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1469282891, now seen corresponding path program 1 times [2018-11-28 12:03:21,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:21,240 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:21,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,270 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:21,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 12:03:21,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:03:21,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:03:21,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:03:21,271 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 5 states. [2018-11-28 12:03:21,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,332 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-11-28 12:03:21,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:03:21,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-28 12:03:21,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,333 INFO L225 Difference]: With dead ends: 34 [2018-11-28 12:03:21,333 INFO L226 Difference]: Without dead ends: 33 [2018-11-28 12:03:21,333 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:03:21,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-28 12:03:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2018-11-28 12:03:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 12:03:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-28 12:03:21,337 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2018-11-28 12:03:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,337 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-28 12:03:21,337 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:03:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-28 12:03:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 12:03:21,338 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,338 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,338 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1696870686, now seen corresponding path program 1 times [2018-11-28 12:03:21,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:03:21,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 12:03:21,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 12:03:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 12:03:21,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:21,358 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 3 states. [2018-11-28 12:03:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,369 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-28 12:03:21,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 12:03:21,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-28 12:03:21,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,371 INFO L225 Difference]: With dead ends: 28 [2018-11-28 12:03:21,371 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 12:03:21,371 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 12:03:21,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 12:03:21,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-28 12:03:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 12:03:21,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-28 12:03:21,375 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2018-11-28 12:03:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,375 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-28 12:03:21,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 12:03:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-28 12:03:21,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 12:03:21,375 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,376 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,376 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1063383767, now seen corresponding path program 1 times [2018-11-28 12:03:21,379 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:21,429 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:21,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:21,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 12:03:21,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 12:03:21,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:03:21,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:03:21,469 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 5 states. [2018-11-28 12:03:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,514 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-28 12:03:21,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:03:21,514 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-28 12:03:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,514 INFO L225 Difference]: With dead ends: 35 [2018-11-28 12:03:21,515 INFO L226 Difference]: Without dead ends: 34 [2018-11-28 12:03:21,515 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:03:21,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-28 12:03:21,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-11-28 12:03:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 12:03:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-28 12:03:21,518 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2018-11-28 12:03:21,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,519 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-28 12:03:21,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 12:03:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-28 12:03:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 12:03:21,519 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,519 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,520 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1394841536, now seen corresponding path program 1 times [2018-11-28 12:03:21,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,552 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:21,552 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:21,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:21,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-28 12:03:21,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:03:21,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:03:21,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:03:21,596 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 7 states. [2018-11-28 12:03:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,667 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-11-28 12:03:21,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 12:03:21,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-28 12:03:21,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,668 INFO L225 Difference]: With dead ends: 39 [2018-11-28 12:03:21,668 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 12:03:21,668 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:03:21,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 12:03:21,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2018-11-28 12:03:21,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 12:03:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-28 12:03:21,671 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 19 [2018-11-28 12:03:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,671 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-28 12:03:21,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:03:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-28 12:03:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 12:03:21,672 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,672 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,672 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,672 INFO L82 PathProgramCache]: Analyzing trace with hash -412918366, now seen corresponding path program 2 times [2018-11-28 12:03:21,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:21,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:21,728 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:21,738 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:03:21,743 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:03:21,744 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:21,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:21,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-11-28 12:03:21,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:03:21,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:03:21,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:03:21,840 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 15 states. [2018-11-28 12:03:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:21,898 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-28 12:03:21,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:03:21,899 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2018-11-28 12:03:21,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:21,899 INFO L225 Difference]: With dead ends: 28 [2018-11-28 12:03:21,899 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 12:03:21,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-28 12:03:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 12:03:21,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-28 12:03:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-28 12:03:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-28 12:03:21,902 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2018-11-28 12:03:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:21,902 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-28 12:03:21,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:03:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-28 12:03:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 12:03:21,903 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:21,903 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:21,903 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:21,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1677556988, now seen corresponding path program 2 times [2018-11-28 12:03:21,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:21,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:21,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,904 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:21,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,945 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:21,945 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:21,951 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:03:21,957 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:03:21,957 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:21,958 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:21,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:21,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 12:03:21,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 12:03:21,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:03:21,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:03:21,977 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 6 states. [2018-11-28 12:03:22,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:22,014 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-28 12:03:22,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 12:03:22,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-28 12:03:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:22,016 INFO L225 Difference]: With dead ends: 37 [2018-11-28 12:03:22,016 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 12:03:22,016 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-28 12:03:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 12:03:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-28 12:03:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 12:03:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-28 12:03:22,019 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-11-28 12:03:22,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:22,019 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-28 12:03:22,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 12:03:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-28 12:03:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 12:03:22,020 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:22,020 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:22,020 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:22,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:22,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1519527834, now seen corresponding path program 2 times [2018-11-28 12:03:22,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:22,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:22,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:22,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:22,059 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:22,073 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:03:22,079 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:03:22,080 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:22,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:22,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:22,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 12:03:22,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 12:03:22,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 12:03:22,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 12:03:22,100 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-11-28 12:03:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:22,166 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-28 12:03:22,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 12:03:22,166 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-28 12:03:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:22,167 INFO L225 Difference]: With dead ends: 39 [2018-11-28 12:03:22,167 INFO L226 Difference]: Without dead ends: 38 [2018-11-28 12:03:22,167 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-28 12:03:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-28 12:03:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-11-28 12:03:22,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 12:03:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-11-28 12:03:22,170 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 25 [2018-11-28 12:03:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:22,170 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-11-28 12:03:22,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 12:03:22,170 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-28 12:03:22,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-28 12:03:22,171 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:22,171 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:22,171 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:22,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:22,171 INFO L82 PathProgramCache]: Analyzing trace with hash -22888747, now seen corresponding path program 3 times [2018-11-28 12:03:22,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:22,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:22,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:22,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:22,216 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:22,234 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:03:22,251 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 12:03:22,251 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:22,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:22,332 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:22,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-28 12:03:22,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:03:22,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:03:22,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:03:22,347 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 15 states. [2018-11-28 12:03:22,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:22,548 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-28 12:03:22,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 12:03:22,549 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-11-28 12:03:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:22,549 INFO L225 Difference]: With dead ends: 44 [2018-11-28 12:03:22,549 INFO L226 Difference]: Without dead ends: 43 [2018-11-28 12:03:22,550 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-28 12:03:22,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-28 12:03:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-11-28 12:03:22,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 12:03:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-11-28 12:03:22,553 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 30 [2018-11-28 12:03:22,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:22,553 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-11-28 12:03:22,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:03:22,553 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-28 12:03:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 12:03:22,554 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:22,554 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:22,554 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:22,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:22,554 INFO L82 PathProgramCache]: Analyzing trace with hash -521247753, now seen corresponding path program 3 times [2018-11-28 12:03:22,555 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:22,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:22,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:22,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,595 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:22,595 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:22,606 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:03:22,617 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 12:03:22,617 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:22,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:22,674 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,690 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:22,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-28 12:03:22,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:03:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:03:22,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:03:22,691 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 15 states. [2018-11-28 12:03:22,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:22,859 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-11-28 12:03:22,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:03:22,860 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 32 [2018-11-28 12:03:22,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:22,861 INFO L225 Difference]: With dead ends: 62 [2018-11-28 12:03:22,861 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 12:03:22,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2018-11-28 12:03:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 12:03:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2018-11-28 12:03:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 12:03:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2018-11-28 12:03:22,865 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 32 [2018-11-28 12:03:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:22,866 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2018-11-28 12:03:22,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:03:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2018-11-28 12:03:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 12:03:22,866 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:22,866 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:22,866 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:22,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1416527861, now seen corresponding path program 4 times [2018-11-28 12:03:22,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:22,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:22,920 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:22,931 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 12:03:22,941 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 12:03:22,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:22,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:22,950 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:22,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:22,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 12:03:22,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 12:03:22,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 12:03:22,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-28 12:03:22,966 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 11 states. [2018-11-28 12:03:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:23,067 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-11-28 12:03:23,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 12:03:23,067 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2018-11-28 12:03:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:23,068 INFO L225 Difference]: With dead ends: 57 [2018-11-28 12:03:23,068 INFO L226 Difference]: Without dead ends: 56 [2018-11-28 12:03:23,068 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-11-28 12:03:23,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-28 12:03:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-11-28 12:03:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 12:03:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-11-28 12:03:23,075 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 44 [2018-11-28 12:03:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:23,075 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-11-28 12:03:23,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 12:03:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-11-28 12:03:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-28 12:03:23,076 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:23,076 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:23,077 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:23,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:23,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2063499460, now seen corresponding path program 5 times [2018-11-28 12:03:23,077 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:23,077 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:23,078 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:23,155 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:23,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:23,155 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:23,167 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 12:03:23,184 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-28 12:03:23,185 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:23,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:23,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:23,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 12:03:23,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 12:03:23,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 12:03:23,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 12:03:23,213 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2018-11-28 12:03:23,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:23,327 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2018-11-28 12:03:23,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 12:03:23,328 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2018-11-28 12:03:23,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:23,329 INFO L225 Difference]: With dead ends: 65 [2018-11-28 12:03:23,329 INFO L226 Difference]: Without dead ends: 64 [2018-11-28 12:03:23,329 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2018-11-28 12:03:23,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-28 12:03:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-11-28 12:03:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 12:03:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-11-28 12:03:23,334 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 51 [2018-11-28 12:03:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:23,334 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-11-28 12:03:23,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 12:03:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-11-28 12:03:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 12:03:23,335 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:23,336 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:23,336 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:23,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:23,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1251908058, now seen corresponding path program 4 times [2018-11-28 12:03:23,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:23,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:23,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:23,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:23,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:23,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:23,417 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:23,423 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 12:03:23,434 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 12:03:23,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:23,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:23,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:23,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 12:03:23,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 12:03:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 12:03:23,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-28 12:03:23,470 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2018-11-28 12:03:23,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:23,662 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-11-28 12:03:23,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 12:03:23,663 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2018-11-28 12:03:23,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:23,664 INFO L225 Difference]: With dead ends: 67 [2018-11-28 12:03:23,664 INFO L226 Difference]: Without dead ends: 66 [2018-11-28 12:03:23,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2018-11-28 12:03:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-28 12:03:23,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2018-11-28 12:03:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 12:03:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-11-28 12:03:23,670 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 53 [2018-11-28 12:03:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:23,670 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-11-28 12:03:23,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 12:03:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-11-28 12:03:23,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-28 12:03:23,671 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:23,671 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:23,672 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:23,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:23,675 INFO L82 PathProgramCache]: Analyzing trace with hash -780023531, now seen corresponding path program 6 times [2018-11-28 12:03:23,675 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:23,675 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:23,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:23,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:23,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:23,766 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:23,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:23,766 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:23,782 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 12:03:23,798 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2018-11-28 12:03:23,799 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:23,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 34 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:23,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:23,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2018-11-28 12:03:23,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-28 12:03:23,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-28 12:03:23,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2018-11-28 12:03:23,961 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 28 states. [2018-11-28 12:03:24,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:24,606 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2018-11-28 12:03:24,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-28 12:03:24,606 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 58 [2018-11-28 12:03:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:24,607 INFO L225 Difference]: With dead ends: 80 [2018-11-28 12:03:24,607 INFO L226 Difference]: Without dead ends: 79 [2018-11-28 12:03:24,608 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=545, Invalid=3361, Unknown=0, NotChecked=0, Total=3906 [2018-11-28 12:03:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-28 12:03:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2018-11-28 12:03:24,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-28 12:03:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-11-28 12:03:24,613 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 58 [2018-11-28 12:03:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:24,613 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-11-28 12:03:24,613 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-28 12:03:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-11-28 12:03:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-28 12:03:24,614 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:24,614 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:24,614 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:24,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:24,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2016665143, now seen corresponding path program 5 times [2018-11-28 12:03:24,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:24,615 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:24,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:24,616 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:24,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:24,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:24,701 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:24,709 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 12:03:24,725 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-11-28 12:03:24,725 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:24,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:24,734 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:24,753 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:24,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-28 12:03:24,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 12:03:24,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 12:03:24,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-28 12:03:24,753 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 14 states. [2018-11-28 12:03:24,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:24,872 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions. [2018-11-28 12:03:24,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:03:24,872 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2018-11-28 12:03:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:24,873 INFO L225 Difference]: With dead ends: 81 [2018-11-28 12:03:24,873 INFO L226 Difference]: Without dead ends: 80 [2018-11-28 12:03:24,874 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2018-11-28 12:03:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-28 12:03:24,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2018-11-28 12:03:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 12:03:24,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2018-11-28 12:03:24,879 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 60 [2018-11-28 12:03:24,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:24,879 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2018-11-28 12:03:24,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 12:03:24,880 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2018-11-28 12:03:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-28 12:03:24,880 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:24,880 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:24,881 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:24,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:24,881 INFO L82 PathProgramCache]: Analyzing trace with hash -461589596, now seen corresponding path program 7 times [2018-11-28 12:03:24,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:24,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:24,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:24,882 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:24,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:24,976 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:24,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:24,976 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:24,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:25,003 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:25,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:25,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-28 12:03:25,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 12:03:25,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 12:03:25,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-28 12:03:25,032 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 15 states. [2018-11-28 12:03:25,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:25,176 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2018-11-28 12:03:25,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 12:03:25,177 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2018-11-28 12:03:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:25,177 INFO L225 Difference]: With dead ends: 86 [2018-11-28 12:03:25,177 INFO L226 Difference]: Without dead ends: 85 [2018-11-28 12:03:25,178 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2018-11-28 12:03:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-28 12:03:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-11-28 12:03:25,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-28 12:03:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-11-28 12:03:25,185 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 65 [2018-11-28 12:03:25,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:25,185 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-11-28 12:03:25,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 12:03:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-11-28 12:03:25,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-28 12:03:25,186 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:25,186 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:25,186 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:25,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:25,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1205968634, now seen corresponding path program 6 times [2018-11-28 12:03:25,187 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:25,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:25,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:25,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:25,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:25,276 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:25,276 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:25,283 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 12:03:25,298 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-11-28 12:03:25,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:25,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:25,328 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:25,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 12:03:25,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 12:03:25,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 12:03:25,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-11-28 12:03:25,329 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 16 states. [2018-11-28 12:03:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:25,469 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2018-11-28 12:03:25,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 12:03:25,470 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2018-11-28 12:03:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:25,471 INFO L225 Difference]: With dead ends: 88 [2018-11-28 12:03:25,471 INFO L226 Difference]: Without dead ends: 87 [2018-11-28 12:03:25,471 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=275, Invalid=595, Unknown=0, NotChecked=0, Total=870 [2018-11-28 12:03:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-28 12:03:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83. [2018-11-28 12:03:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-28 12:03:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2018-11-28 12:03:25,476 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 67 [2018-11-28 12:03:25,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:25,477 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2018-11-28 12:03:25,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 12:03:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2018-11-28 12:03:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 12:03:25,477 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:25,478 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:25,478 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:25,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:25,478 INFO L82 PathProgramCache]: Analyzing trace with hash -187635881, now seen corresponding path program 7 times [2018-11-28 12:03:25,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:25,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:25,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:25,479 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:25,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:25,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:25,584 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:25,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:25,611 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:25,646 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:25,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-28 12:03:25,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 12:03:25,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 12:03:25,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-11-28 12:03:25,647 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 17 states. [2018-11-28 12:03:25,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:25,828 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2018-11-28 12:03:25,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 12:03:25,828 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2018-11-28 12:03:25,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:25,829 INFO L225 Difference]: With dead ends: 95 [2018-11-28 12:03:25,829 INFO L226 Difference]: Without dead ends: 94 [2018-11-28 12:03:25,829 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=312, Invalid=680, Unknown=0, NotChecked=0, Total=992 [2018-11-28 12:03:25,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2018-11-28 12:03:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2018-11-28 12:03:25,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-28 12:03:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2018-11-28 12:03:25,833 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 74 [2018-11-28 12:03:25,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:25,834 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2018-11-28 12:03:25,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 12:03:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2018-11-28 12:03:25,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-28 12:03:25,834 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:25,834 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:25,835 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:25,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:25,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1412980356, now seen corresponding path program 8 times [2018-11-28 12:03:25,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:25,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:25,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:25,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:03:25,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:25,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:25,967 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:25,977 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:03:25,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:03:25,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:25,992 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:26,014 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:26,014 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 12:03:26,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 12:03:26,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 12:03:26,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-28 12:03:26,015 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 18 states. [2018-11-28 12:03:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:26,205 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2018-11-28 12:03:26,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 12:03:26,206 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2018-11-28 12:03:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:26,206 INFO L225 Difference]: With dead ends: 100 [2018-11-28 12:03:26,206 INFO L226 Difference]: Without dead ends: 99 [2018-11-28 12:03:26,207 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 12:03:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-28 12:03:26,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2018-11-28 12:03:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-28 12:03:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2018-11-28 12:03:26,211 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 79 [2018-11-28 12:03:26,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:26,212 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2018-11-28 12:03:26,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 12:03:26,212 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2018-11-28 12:03:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2018-11-28 12:03:26,212 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:26,212 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:26,213 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:26,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:26,213 INFO L82 PathProgramCache]: Analyzing trace with hash 664458214, now seen corresponding path program 8 times [2018-11-28 12:03:26,213 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:26,213 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:26,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:26,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:26,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:26,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:26,391 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:26,401 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:03:26,414 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:03:26,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:26,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:26,425 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:26,450 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:26,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-28 12:03:26,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 12:03:26,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 12:03:26,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-28 12:03:26,451 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 19 states. [2018-11-28 12:03:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:26,636 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2018-11-28 12:03:26,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 12:03:26,636 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2018-11-28 12:03:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:26,637 INFO L225 Difference]: With dead ends: 102 [2018-11-28 12:03:26,637 INFO L226 Difference]: Without dead ends: 101 [2018-11-28 12:03:26,637 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=393, Invalid=867, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 12:03:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-28 12:03:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-11-28 12:03:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-28 12:03:26,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-11-28 12:03:26,643 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 81 [2018-11-28 12:03:26,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:26,644 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-11-28 12:03:26,644 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 12:03:26,644 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-11-28 12:03:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-28 12:03:26,644 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:26,645 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:26,645 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:26,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1932035977, now seen corresponding path program 9 times [2018-11-28 12:03:26,645 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:26,645 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:26,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:26,646 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:26,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:26,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:26,787 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:26,803 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:03:26,823 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2018-11-28 12:03:26,823 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:26,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:26,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:26,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 12:03:26,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 12:03:26,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 12:03:26,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-11-28 12:03:26,852 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 20 states. [2018-11-28 12:03:27,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:03:27,101 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-11-28 12:03:27,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-28 12:03:27,103 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2018-11-28 12:03:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:03:27,103 INFO L225 Difference]: With dead ends: 109 [2018-11-28 12:03:27,103 INFO L226 Difference]: Without dead ends: 108 [2018-11-28 12:03:27,104 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=437, Invalid=969, Unknown=0, NotChecked=0, Total=1406 [2018-11-28 12:03:27,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-28 12:03:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2018-11-28 12:03:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-28 12:03:27,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2018-11-28 12:03:27,111 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 88 [2018-11-28 12:03:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:03:27,111 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2018-11-28 12:03:27,111 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 12:03:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2018-11-28 12:03:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-28 12:03:27,112 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:03:27,112 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 12:03:27,112 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:03:27,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:03:27,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1967096164, now seen corresponding path program 9 times [2018-11-28 12:03:27,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:03:27,113 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:03:27,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:27,113 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:03:27,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:03:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:03:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:03:27,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:03:27,249 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:03:27,255 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:03:27,266 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-11-28 12:03:27,266 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:03:27,268 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:03:33,659 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 276 proven. 123 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-28 12:03:33,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:03:33,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-11-28 12:03:33,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-28 12:03:33,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-28 12:03:33,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1414, Unknown=8, NotChecked=0, Total=1560 [2018-11-28 12:03:33,677 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand 40 states. [2018-11-28 12:03:46,230 WARN L180 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-11-28 12:03:46,749 WARN L180 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-11-28 12:03:48,577 WARN L180 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2018-11-28 12:03:48,922 WARN L180 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 37 [2018-11-28 12:03:50,259 WARN L180 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2018-11-28 12:03:50,457 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2018-11-28 12:03:50,670 WARN L180 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 49 [2018-11-28 12:03:51,656 WARN L180 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-11-28 12:03:55,560 WARN L180 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-28 12:03:57,721 WARN L180 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2018-11-28 12:03:58,341 WARN L180 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-11-28 12:04:00,291 WARN L180 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-28 12:04:04,143 WARN L180 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2018-11-28 12:04:06,729 WARN L180 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-11-28 12:04:12,097 WARN L180 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2018-11-28 12:04:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:20,158 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2018-11-28 12:04:20,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-11-28 12:04:20,158 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 93 [2018-11-28 12:04:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:20,159 INFO L225 Difference]: With dead ends: 113 [2018-11-28 12:04:20,159 INFO L226 Difference]: Without dead ends: 112 [2018-11-28 12:04:20,161 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3150 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=2234, Invalid=9957, Unknown=19, NotChecked=0, Total=12210 [2018-11-28 12:04:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-11-28 12:04:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2018-11-28 12:04:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-28 12:04:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-11-28 12:04:20,170 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93 [2018-11-28 12:04:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:20,171 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-11-28 12:04:20,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-28 12:04:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-11-28 12:04:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-28 12:04:20,171 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:20,172 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:20,172 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:04:20,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:20,172 INFO L82 PathProgramCache]: Analyzing trace with hash 593804998, now seen corresponding path program 10 times [2018-11-28 12:04:20,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:20,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:20,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:20,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:04:20,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:20,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:04:20,347 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:04:20,357 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 12:04:20,374 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 12:04:20,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:04:20,375 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:04:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 534 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:20,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:04:20,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-28 12:04:20,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 12:04:20,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 12:04:20,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-11-28 12:04:20,399 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 22 states. [2018-11-28 12:04:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:20,664 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-11-28 12:04:20,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-28 12:04:20,664 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 95 [2018-11-28 12:04:20,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:20,665 INFO L225 Difference]: With dead ends: 108 [2018-11-28 12:04:20,665 INFO L226 Difference]: Without dead ends: 107 [2018-11-28 12:04:20,666 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=532, Invalid=1190, Unknown=0, NotChecked=0, Total=1722 [2018-11-28 12:04:20,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-28 12:04:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2018-11-28 12:04:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-11-28 12:04:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-11-28 12:04:20,674 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 95 [2018-11-28 12:04:20,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:20,674 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-11-28 12:04:20,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 12:04:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-11-28 12:04:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-28 12:04:20,675 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:20,675 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:20,675 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:04:20,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:20,676 INFO L82 PathProgramCache]: Analyzing trace with hash 620335511, now seen corresponding path program 11 times [2018-11-28 12:04:20,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:20,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:20,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:20,677 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:04:20,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:20,865 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:04:20,865 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:04:20,872 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 12:04:20,894 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-11-28 12:04:20,894 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:04:20,896 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:04:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 0 proven. 624 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:20,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:04:20,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-28 12:04:20,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-28 12:04:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-28 12:04:20,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2018-11-28 12:04:20,924 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 23 states. [2018-11-28 12:04:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:21,178 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-11-28 12:04:21,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-28 12:04:21,178 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 102 [2018-11-28 12:04:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:21,179 INFO L225 Difference]: With dead ends: 115 [2018-11-28 12:04:21,179 INFO L226 Difference]: Without dead ends: 114 [2018-11-28 12:04:21,180 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=583, Invalid=1309, Unknown=0, NotChecked=0, Total=1892 [2018-11-28 12:04:21,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-28 12:04:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 110. [2018-11-28 12:04:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-11-28 12:04:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2018-11-28 12:04:21,186 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 102 [2018-11-28 12:04:21,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:21,186 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2018-11-28 12:04:21,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-28 12:04:21,187 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2018-11-28 12:04:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-28 12:04:21,187 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 12:04:21,187 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-28 12:04:21,187 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 12:04:21,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:04:21,188 INFO L82 PathProgramCache]: Analyzing trace with hash 2055872934, now seen corresponding path program 12 times [2018-11-28 12:04:21,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:04:21,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:04:21,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:21,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:04:21,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:04:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:04:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 0 proven. 721 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:21,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:04:21,363 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:04:21,372 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 12:04:21,398 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-11-28 12:04:21,399 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:04:21,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:04:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 234 proven. 487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:04:21,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:04:21,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 50 [2018-11-28 12:04:21,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-28 12:04:21,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-28 12:04:21,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=2301, Unknown=0, NotChecked=0, Total=2550 [2018-11-28 12:04:21,904 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 51 states. [2018-11-28 12:04:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:04:24,476 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2018-11-28 12:04:24,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-28 12:04:24,477 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 109 [2018-11-28 12:04:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 12:04:24,477 INFO L225 Difference]: With dead ends: 121 [2018-11-28 12:04:24,477 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 12:04:24,479 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3453, Invalid=8319, Unknown=0, NotChecked=0, Total=11772 [2018-11-28 12:04:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 12:04:24,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 12:04:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 12:04:24,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:04:24,479 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2018-11-28 12:04:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 12:04:24,479 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:04:24,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-28 12:04:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:04:24,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 12:04:24,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 12:04:24,648 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 224 [2018-11-28 12:04:26,064 WARN L180 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 223 DAG size of output: 87 [2018-11-28 12:04:26,066 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 12:04:26,066 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 16 29) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 16 29) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 16 29) the Hoare annotation is: true [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-28 12:04:26,066 INFO L448 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-28 12:04:26,067 INFO L444 ceAbstractionStarter]: At program point L22-2(lines 22 27) the Hoare annotation is: (let ((.cse4 (+ main_~d2~0 main_~x~0)) (.cse5 (+ main_~d1old~0 main_~x~0)) (.cse12 (<= main_~x~0 2147483499)) (.cse14 (<= 73 main_~d1old~0)) (.cse11 (<= 75 main_~d1~0)) (.cse9 (<= 74 main_~d2~0))) (let ((.cse3 (<= 79 main_~d1~0)) (.cse2 (and .cse12 (<= main_~d1~0 2147483647) .cse14 .cse11 .cse9)) (.cse8 (<= main_~d2~0 76)) (.cse7 (<= main_~d1old~0 75)) (.cse0 (<= 0 .cse5)) (.cse6 (<= .cse5 2147483647)) (.cse10 (<= main_~d2~0 74)) (.cse13 (<= main_~d1~0 75)) (.cse1 (<= 1 .cse4))) (or (and (or (and .cse0 .cse1 (and .cse2 .cse3 (<= .cse4 2147483569) (<= .cse5 2147483568))) (and (<= .cse4 2147483648) .cse0 .cse6 (and .cse2 (<= 77 main_~d1old~0) (<= 78 main_~d2~0)) .cse1)) (exists ((v_prenex_2 Int)) (and (<= main_~d1~0 (+ v_prenex_2 2)) (<= (* 2 v_prenex_2) 4294967287))) (exists ((main_~d1~0 Int)) (and (<= main_~d1old~0 main_~d1~0) (<= (+ main_~x~0 (* 2 main_~d1~0)) 4294967287))) (exists ((v_prenex_2 Int)) (and (<= main_~d1old~0 (+ v_prenex_2 2)) (<= (* 2 v_prenex_2) 4294967287))) (exists ((main_~d1~0 Int)) (and (<= (+ main_~x~0 (* 2 main_~d1~0)) 4294967287) (<= main_~d2~0 (+ main_~d1~0 1))))) (and .cse7 .cse8 (<= main_~d1~0 77) .cse0 (<= .cse4 2147483500) .cse2 (<= .cse5 2147483499) .cse1 (<= 77 main_~d1~0)) (and .cse3 (<= main_~d1old~0 77) .cse0 (<= main_~d1~0 79) .cse2 (<= main_~d2~0 78) .cse1) (and .cse9 (<= main_~x~0 2147483647) (<= main_~d1~0 73) .cse10 (<= 73 main_~d1~0)) (and .cse8 (<= 76 main_~d2~0) .cse11 (<= 75 main_~d1old~0) .cse7 .cse0 .cse12 .cse13) (and .cse6 .cse9 (<= main_~d1old~0 73) .cse10 .cse13 .cse14 .cse1 .cse11)))) [2018-11-28 12:04:26,067 INFO L448 ceAbstractionStarter]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2018-11-28 12:04:26,067 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-28 12:04:26,067 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-28 12:04:26,073 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,074 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,074 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,074 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,074 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,075 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,075 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,075 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,083 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,083 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,083 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,083 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,083 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,084 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,084 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,084 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 12:04:26 BoogieIcfgContainer [2018-11-28 12:04:26,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 12:04:26,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:04:26,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:04:26,093 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:04:26,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:03:20" (3/4) ... [2018-11-28 12:04:26,098 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 12:04:26,103 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 12:04:26,104 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 12:04:26,107 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-11-28 12:04:26,107 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 12:04:26,108 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:04:26,108 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 12:04:26,128 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((0 <= d1\old + x && 1 <= d2 + x) && ((((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 79 <= d1) && d2 + x <= 2147483569) && d1\old + x <= 2147483568) || ((((d2 + x <= 2147483648 && 0 <= d1\old + x) && d1\old + x <= 2147483647) && (((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 77 <= d1\old) && 78 <= d2) && 1 <= d2 + x)) && (\exists v_prenex_2 : int :: d1 <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287)) && (\exists main_~d1~0 : int :: d1\old <= main_~d1~0 && x + 2 * main_~d1~0 <= 4294967287)) && (\exists v_prenex_2 : int :: d1\old <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287)) && (\exists main_~d1~0 : int :: x + 2 * main_~d1~0 <= 4294967287 && d2 <= main_~d1~0 + 1)) || ((((((((d1\old <= 75 && d2 <= 76) && d1 <= 77) && 0 <= d1\old + x) && d2 + x <= 2147483500) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d1\old + x <= 2147483499) && 1 <= d2 + x) && 77 <= d1)) || ((((((79 <= d1 && d1\old <= 77) && 0 <= d1\old + x) && d1 <= 79) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d2 <= 78) && 1 <= d2 + x)) || ((((74 <= d2 && x <= 2147483647) && d1 <= 73) && d2 <= 74) && 73 <= d1)) || (((((((d2 <= 76 && 76 <= d2) && 75 <= d1) && 75 <= d1\old) && d1\old <= 75) && 0 <= d1\old + x) && x <= 2147483499) && d1 <= 75)) || (((((((d1\old + x <= 2147483647 && 74 <= d2) && d1\old <= 73) && d2 <= 74) && d1 <= 75) && 73 <= d1\old) && 1 <= d2 + x) && 75 <= d1) [2018-11-28 12:04:26,138 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2193235a-24b7-4341-ae99-1678ddd5dacc/bin-2019/uautomizer/witness.graphml [2018-11-28 12:04:26,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:04:26,139 INFO L168 Benchmark]: Toolchain (without parser) took 66380.25 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 349.2 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -110.7 MB). Peak memory consumption was 238.4 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:26,139 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:04:26,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.78 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:26,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.10 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:04:26,140 INFO L168 Benchmark]: Boogie Preprocessor took 18.59 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:04:26,140 INFO L168 Benchmark]: RCFGBuilder took 202.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:26,140 INFO L168 Benchmark]: TraceAbstraction took 65944.16 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 195.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.1 MB). Peak memory consumption was 259.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:26,141 INFO L168 Benchmark]: Witness Printer took 45.29 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. [2018-11-28 12:04:26,142 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.78 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.10 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.59 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 202.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -195.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 65944.16 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 195.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 64.1 MB). Peak memory consumption was 259.1 MB. Max. memory is 11.5 GB. * Witness Printer took 45.29 ms. Allocated memory is still 1.4 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: 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: 22]: Loop Invariant [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,146 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,147 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,148 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,148 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,148 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,148 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,148 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,149 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_prenex_2,QUANTIFIED] [2018-11-28 12:04:26,149 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] [2018-11-28 12:04:26,149 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~d1~0,QUANTIFIED] Derived loop invariant: (((((((((((0 <= d1\old + x && 1 <= d2 + x) && ((((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 79 <= d1) && d2 + x <= 2147483569) && d1\old + x <= 2147483568) || ((((d2 + x <= 2147483648 && 0 <= d1\old + x) && d1\old + x <= 2147483647) && (((((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && 77 <= d1\old) && 78 <= d2) && 1 <= d2 + x)) && (\exists v_prenex_2 : int :: d1 <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287)) && (\exists main_~d1~0 : int :: d1\old <= main_~d1~0 && x + 2 * main_~d1~0 <= 4294967287)) && (\exists v_prenex_2 : int :: d1\old <= v_prenex_2 + 2 && 2 * v_prenex_2 <= 4294967287)) && (\exists main_~d1~0 : int :: x + 2 * main_~d1~0 <= 4294967287 && d2 <= main_~d1~0 + 1)) || ((((((((d1\old <= 75 && d2 <= 76) && d1 <= 77) && 0 <= d1\old + x) && d2 + x <= 2147483500) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d1\old + x <= 2147483499) && 1 <= d2 + x) && 77 <= d1)) || ((((((79 <= d1 && d1\old <= 77) && 0 <= d1\old + x) && d1 <= 79) && (((x <= 2147483499 && d1 <= 2147483647) && 73 <= d1\old) && 75 <= d1) && 74 <= d2) && d2 <= 78) && 1 <= d2 + x)) || ((((74 <= d2 && x <= 2147483647) && d1 <= 73) && d2 <= 74) && 73 <= d1)) || (((((((d2 <= 76 && 76 <= d2) && 75 <= d1) && 75 <= d1\old) && d1\old <= 75) && 0 <= d1\old + x) && x <= 2147483499) && d1 <= 75)) || (((((((d1\old + x <= 2147483647 && 74 <= d2) && d1\old <= 73) && d2 <= 74) && d1 <= 75) && 73 <= d1\old) && 1 <= d2 + x) && 75 <= d1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. SAFE Result, 65.8s OverallTime, 32 OverallIterations, 15 TraceHistogramMax, 53.0s AutomataDifference, 0.0s DeadEndRemovalTime, 1.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 333 SDtfs, 2129 SDslu, 1781 SDs, 0 SdLazy, 3567 SolverSat, 1301 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 18.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2053 GetRequests, 1279 SyntacticMatches, 3 SemanticMatches, 771 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9035 ImplicationChecksByTransitivity, 42.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 32 MinimizatonAttempts, 144 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 21 NumberOfFragments, 302 HoareAnnotationTreeSize, 5 FomulaSimplifications, 79445 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 178557 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 2738 NumberOfCodeBlocks, 2703 NumberOfCodeBlocksAsserted, 144 NumberOfCheckSat, 2681 ConstructedInterpolants, 40 QuantifiedInterpolants, 606108 SizeOfPredicates, 250 NumberOfNonLiveVariables, 2936 ConjunctsInSsa, 327 ConjunctsInUnsatCore, 57 InterpolantComputations, 8 PerfectInterpolantSequences, 671/10427 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...