./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 cf39454d83b4ec00341bd0b620b0fa6b2321ce21 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 15:34:29,180 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:34:29,181 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:34:29,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:34:29,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:34:29,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:34:29,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:34:29,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:34:29,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:34:29,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:34:29,190 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:34:29,190 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:34:29,191 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:34:29,191 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:34:29,192 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:34:29,192 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:34:29,192 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:34:29,193 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:34:29,194 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:34:29,195 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:34:29,195 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:34:29,196 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:34:29,197 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:34:29,197 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:34:29,197 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:34:29,197 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:34:29,198 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:34:29,198 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:34:29,199 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:34:29,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:34:29,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:34:29,200 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:34:29,200 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:34:29,200 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:34:29,200 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:34:29,200 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:34:29,201 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-12-09 15:34:29,207 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:34:29,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:34:29,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 15:34:29,208 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 15:34:29,208 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 15:34:29,208 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 15:34:29,209 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-12-09 15:34:29,209 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 15:34:29,210 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 15:34:29,210 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 15:34:29,210 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 15:34:29,211 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 15:34:29,211 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 15:34:29,211 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_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2018-12-09 15:34:29,228 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:34:29,237 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:34:29,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:34:29,241 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:34:29,241 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:34:29,242 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 15:34:29,287 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/data/e41f43002/4ddb85613e474c6398c72b955b7fc52b/FLAGab0bde14c [2018-12-09 15:34:29,601 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:34:29,601 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 15:34:29,605 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/data/e41f43002/4ddb85613e474c6398c72b955b7fc52b/FLAGab0bde14c [2018-12-09 15:34:29,613 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/data/e41f43002/4ddb85613e474c6398c72b955b7fc52b [2018-12-09 15:34:29,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:34:29,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:34:29,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:34:29,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:34:29,618 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:34:29,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1782ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29, skipping insertion in model container [2018-12-09 15:34:29,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:34:29,633 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:34:29,718 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:34:29,720 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:34:29,731 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:34:29,743 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:34:29,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29 WrapperNode [2018-12-09 15:34:29,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:34:29,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:34:29,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:34:29,744 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:34:29,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:34:29,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:34:29,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:34:29,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:34:29,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... [2018-12-09 15:34:29,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:34:29,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:34:29,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:34:29,803 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:34:29,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 15:34:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 15:34:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 15:34:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 15:34:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:34:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:34:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 15:34:29,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 15:34:29,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 15:34:29,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 15:34:29,923 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:34:29,923 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 15:34:29,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:34:29 BoogieIcfgContainer [2018-12-09 15:34:29,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:34:29,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 15:34:29,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 15:34:29,927 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 15:34:29,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:34:29" (1/3) ... [2018-12-09 15:34:29,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d791953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:34:29, skipping insertion in model container [2018-12-09 15:34:29,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:34:29" (2/3) ... [2018-12-09 15:34:29,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d791953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:34:29, skipping insertion in model container [2018-12-09 15:34:29,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:34:29" (3/3) ... [2018-12-09 15:34:29,929 INFO L112 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-09 15:34:29,935 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 15:34:29,939 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-12-09 15:34:29,948 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-12-09 15:34:29,964 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 15:34:29,964 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 15:34:29,964 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 15:34:29,964 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 15:34:29,964 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 15:34:29,964 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 15:34:29,964 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 15:34:29,965 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 15:34:29,965 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 15:34:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-09 15:34:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 15:34:29,978 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:29,978 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:29,980 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:29,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:29,985 INFO L82 PathProgramCache]: Analyzing trace with hash 842098899, now seen corresponding path program 1 times [2018-12-09 15:34:29,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:29,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:34:30,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 15:34:30,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:34:30,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:34:30,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:34:30,102 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2018-12-09 15:34:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,144 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2018-12-09 15:34:30,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:34:30,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-12-09 15:34:30,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,150 INFO L225 Difference]: With dead ends: 40 [2018-12-09 15:34:30,151 INFO L226 Difference]: Without dead ends: 22 [2018-12-09 15:34:30,152 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 [2018-12-09 15:34:30,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-12-09 15:34:30,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-12-09 15:34:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 15:34:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-09 15:34:30,174 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 9 [2018-12-09 15:34:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,174 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-09 15:34:30,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:34:30,175 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-09 15:34:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 15:34:30,175 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,175 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,175 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1995551887, now seen corresponding path program 1 times [2018-12-09 15:34:30,176 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 15:34:30,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:34:30,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 15:34:30,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:34:30,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:34:30,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:34:30,204 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 4 states. [2018-12-09 15:34:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,231 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 15:34:30,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:34:30,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-12-09 15:34:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,232 INFO L225 Difference]: With dead ends: 22 [2018-12-09 15:34:30,232 INFO L226 Difference]: Without dead ends: 21 [2018-12-09 15:34:30,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-09 15:34:30,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-09 15:34:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-09 15:34:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 15:34:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 15:34:30,235 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 13 [2018-12-09 15:34:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,235 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 15:34:30,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:34:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 15:34:30,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 15:34:30,236 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,236 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,236 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1732517839, now seen corresponding path program 1 times [2018-12-09 15:34:30,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,267 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:30,267 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:30,274 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,291 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:30,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-12-09 15:34:30,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 15:34:30,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 15:34:30,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-12-09 15:34:30,365 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2018-12-09 15:34:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,392 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-12-09 15:34:30,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:34:30,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-12-09 15:34:30,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,393 INFO L225 Difference]: With dead ends: 32 [2018-12-09 15:34:30,393 INFO L226 Difference]: Without dead ends: 26 [2018-12-09 15:34:30,394 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-09 15:34:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-09 15:34:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-12-09 15:34:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-12-09 15:34:30,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-12-09 15:34:30,396 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2018-12-09 15:34:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,396 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-12-09 15:34:30,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 15:34:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-12-09 15:34:30,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-12-09 15:34:30,396 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,396 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,397 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1732566402, now seen corresponding path program 1 times [2018-12-09 15:34:30,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:30,426 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:30,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 15:34:30,473 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-12-09 15:34:30,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 15:34:30,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 15:34:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-09 15:34:30,473 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2018-12-09 15:34:30,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,506 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-12-09 15:34:30,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 15:34:30,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-12-09 15:34:30,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,507 INFO L225 Difference]: With dead ends: 22 [2018-12-09 15:34:30,507 INFO L226 Difference]: Without dead ends: 21 [2018-12-09 15:34:30,507 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-12-09 15:34:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-09 15:34:30,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-12-09 15:34:30,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-09 15:34:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-12-09 15:34:30,510 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2018-12-09 15:34:30,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,510 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-12-09 15:34:30,511 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 15:34:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-12-09 15:34:30,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 15:34:30,511 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,511 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,511 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1456064915, now seen corresponding path program 2 times [2018-12-09 15:34:30,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,512 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:30,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:30,542 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:30,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 15:34:30,555 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 15:34:30,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:30,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:30,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,583 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:30,583 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2018-12-09 15:34:30,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 15:34:30,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 15:34:30,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-12-09 15:34:30,584 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 9 states. [2018-12-09 15:34:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,608 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2018-12-09 15:34:30,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 15:34:30,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2018-12-09 15:34:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,609 INFO L225 Difference]: With dead ends: 34 [2018-12-09 15:34:30,609 INFO L226 Difference]: Without dead ends: 28 [2018-12-09 15:34:30,609 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:34:30,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-12-09 15:34:30,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2018-12-09 15:34:30,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 15:34:30,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-12-09 15:34:30,612 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2018-12-09 15:34:30,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,612 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2018-12-09 15:34:30,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 15:34:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2018-12-09 15:34:30,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 15:34:30,612 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,612 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,613 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1411182935, now seen corresponding path program 3 times [2018-12-09 15:34:30,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,614 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:30,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,658 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:30,658 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:30,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 15:34:30,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-09 15:34:30,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:30,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:30,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-12-09 15:34:30,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-09 15:34:30,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-09 15:34:30,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-12-09 15:34:30,710 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 11 states. [2018-12-09 15:34:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,744 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-12-09 15:34:30,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 15:34:30,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2018-12-09 15:34:30,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,745 INFO L225 Difference]: With dead ends: 38 [2018-12-09 15:34:30,745 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 15:34:30,745 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-12-09 15:34:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 15:34:30,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2018-12-09 15:34:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-09 15:34:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-12-09 15:34:30,748 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2018-12-09 15:34:30,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,748 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-12-09 15:34:30,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-09 15:34:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-12-09 15:34:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 15:34:30,748 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,749 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,749 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1605462245, now seen corresponding path program 4 times [2018-12-09 15:34:30,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:30,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:30,807 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:30,807 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:30,813 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 15:34:30,823 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 15:34:30,824 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:30,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:30,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:30,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-12-09 15:34:30,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 15:34:30,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 15:34:30,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-12-09 15:34:30,853 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states. [2018-12-09 15:34:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:30,898 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-12-09 15:34:30,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-09 15:34:30,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-12-09 15:34:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:30,899 INFO L225 Difference]: With dead ends: 42 [2018-12-09 15:34:30,899 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 15:34:30,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2018-12-09 15:34:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 15:34:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-09 15:34:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 15:34:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2018-12-09 15:34:30,903 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2018-12-09 15:34:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:30,903 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2018-12-09 15:34:30,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 15:34:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2018-12-09 15:34:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 15:34:30,904 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:30,904 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:30,904 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:30,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:30,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1947223329, now seen corresponding path program 5 times [2018-12-09 15:34:30,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:30,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:30,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,906 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:30,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,003 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:31,003 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:31,009 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 15:34:31,027 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-09 15:34:31,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:31,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,059 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:31,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2018-12-09 15:34:31,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-09 15:34:31,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-09 15:34:31,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-12-09 15:34:31,060 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 15 states. [2018-12-09 15:34:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:31,123 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2018-12-09 15:34:31,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-09 15:34:31,123 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2018-12-09 15:34:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:31,124 INFO L225 Difference]: With dead ends: 46 [2018-12-09 15:34:31,124 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 15:34:31,124 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2018-12-09 15:34:31,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 15:34:31,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-12-09 15:34:31,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 15:34:31,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-09 15:34:31,127 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2018-12-09 15:34:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:31,127 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-09 15:34:31,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-09 15:34:31,127 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-09 15:34:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 15:34:31,128 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:31,128 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:31,128 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:31,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:31,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1223598941, now seen corresponding path program 6 times [2018-12-09 15:34:31,128 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:31,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:31,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:31,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:31,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:31,250 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 15:34:31,267 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-09 15:34:31,267 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:31,269 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:31,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2018-12-09 15:34:31,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-12-09 15:34:31,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-12-09 15:34:31,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2018-12-09 15:34:31,304 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 17 states. [2018-12-09 15:34:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:31,360 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-12-09 15:34:31,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-09 15:34:31,360 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 34 [2018-12-09 15:34:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:31,360 INFO L225 Difference]: With dead ends: 50 [2018-12-09 15:34:31,361 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 15:34:31,361 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2018-12-09 15:34:31,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 15:34:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-09 15:34:31,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 15:34:31,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-12-09 15:34:31,364 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2018-12-09 15:34:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:31,364 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-12-09 15:34:31,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-12-09 15:34:31,364 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-12-09 15:34:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 15:34:31,364 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:31,364 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:31,364 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:31,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:31,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1363442791, now seen corresponding path program 7 times [2018-12-09 15:34:31,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:31,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:31,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,365 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:31,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,460 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:31,460 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:31,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:31,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:31,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2018-12-09 15:34:31,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-12-09 15:34:31,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-12-09 15:34:31,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2018-12-09 15:34:31,518 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 19 states. [2018-12-09 15:34:31,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:31,603 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2018-12-09 15:34:31,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-12-09 15:34:31,603 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 38 [2018-12-09 15:34:31,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:31,604 INFO L225 Difference]: With dead ends: 54 [2018-12-09 15:34:31,604 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 15:34:31,604 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2018-12-09 15:34:31,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 15:34:31,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-12-09 15:34:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 15:34:31,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2018-12-09 15:34:31,606 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2018-12-09 15:34:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:31,607 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2018-12-09 15:34:31,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-12-09 15:34:31,607 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2018-12-09 15:34:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-12-09 15:34:31,607 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:31,607 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:31,607 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:31,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:31,607 INFO L82 PathProgramCache]: Analyzing trace with hash 1503271467, now seen corresponding path program 8 times [2018-12-09 15:34:31,607 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:31,608 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:31,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:31,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:31,713 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:31,718 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 15:34:31,728 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 15:34:31,728 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:31,730 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:31,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2018-12-09 15:34:31,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-12-09 15:34:31,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-12-09 15:34:31,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-12-09 15:34:31,762 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 21 states. [2018-12-09 15:34:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:31,849 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-12-09 15:34:31,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-09 15:34:31,850 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2018-12-09 15:34:31,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:31,850 INFO L225 Difference]: With dead ends: 58 [2018-12-09 15:34:31,850 INFO L226 Difference]: Without dead ends: 52 [2018-12-09 15:34:31,851 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2018-12-09 15:34:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-12-09 15:34:31,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-12-09 15:34:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-12-09 15:34:31,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-12-09 15:34:31,854 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2018-12-09 15:34:31,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:31,855 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-12-09 15:34:31,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-12-09 15:34:31,855 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-12-09 15:34:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-12-09 15:34:31,855 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:31,855 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:31,856 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:31,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:31,856 INFO L82 PathProgramCache]: Analyzing trace with hash -559729169, now seen corresponding path program 9 times [2018-12-09 15:34:31,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:31,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:31,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,857 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:31,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:31,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:31,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:31,983 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:31,989 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 15:34:32,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-09 15:34:32,018 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:32,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:32,056 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:32,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2018-12-09 15:34:32,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-12-09 15:34:32,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-12-09 15:34:32,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2018-12-09 15:34:32,057 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 23 states. [2018-12-09 15:34:32,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:32,166 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-12-09 15:34:32,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-09 15:34:32,166 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2018-12-09 15:34:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:32,167 INFO L225 Difference]: With dead ends: 62 [2018-12-09 15:34:32,167 INFO L226 Difference]: Without dead ends: 56 [2018-12-09 15:34:32,168 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2018-12-09 15:34:32,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-12-09 15:34:32,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-12-09 15:34:32,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-12-09 15:34:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-12-09 15:34:32,172 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2018-12-09 15:34:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:32,172 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-12-09 15:34:32,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-12-09 15:34:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-12-09 15:34:32,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-12-09 15:34:32,173 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:32,173 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:32,173 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:32,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:32,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1047580595, now seen corresponding path program 10 times [2018-12-09 15:34:32,174 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:32,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:32,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:32,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:32,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:32,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:32,324 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:32,330 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 15:34:32,344 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 15:34:32,344 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:32,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:32,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:32,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2018-12-09 15:34:32,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-09 15:34:32,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-09 15:34:32,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2018-12-09 15:34:32,397 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 25 states. [2018-12-09 15:34:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:32,527 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2018-12-09 15:34:32,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-09 15:34:32,527 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-12-09 15:34:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:32,527 INFO L225 Difference]: With dead ends: 66 [2018-12-09 15:34:32,528 INFO L226 Difference]: Without dead ends: 60 [2018-12-09 15:34:32,528 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 15:34:32,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-12-09 15:34:32,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-12-09 15:34:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-12-09 15:34:32,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-12-09 15:34:32,530 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2018-12-09 15:34:32,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:32,531 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-12-09 15:34:32,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-09 15:34:32,531 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-12-09 15:34:32,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-12-09 15:34:32,531 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:32,531 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:32,531 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:32,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:32,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1720969079, now seen corresponding path program 11 times [2018-12-09 15:34:32,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:32,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:32,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:32,532 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:32,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:32,670 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:32,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:32,670 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:32,676 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 15:34:32,708 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-12-09 15:34:32,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:32,710 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:32,743 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:32,743 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2018-12-09 15:34:32,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-12-09 15:34:32,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-12-09 15:34:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2018-12-09 15:34:32,744 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 27 states. [2018-12-09 15:34:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:32,860 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2018-12-09 15:34:32,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-09 15:34:32,860 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 54 [2018-12-09 15:34:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:32,861 INFO L225 Difference]: With dead ends: 70 [2018-12-09 15:34:32,861 INFO L226 Difference]: Without dead ends: 64 [2018-12-09 15:34:32,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2018-12-09 15:34:32,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-12-09 15:34:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2018-12-09 15:34:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-12-09 15:34:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2018-12-09 15:34:32,864 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2018-12-09 15:34:32,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:32,864 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2018-12-09 15:34:32,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-12-09 15:34:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2018-12-09 15:34:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-12-09 15:34:32,864 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:32,865 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:32,865 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:32,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:32,865 INFO L82 PathProgramCache]: Analyzing trace with hash 337476923, now seen corresponding path program 12 times [2018-12-09 15:34:32,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:32,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:32,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:32,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:32,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:33,016 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:33,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:33,017 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:33,022 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 15:34:33,106 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-12-09 15:34:33,106 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:33,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:33,130 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:33,145 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:33,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2018-12-09 15:34:33,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-12-09 15:34:33,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-12-09 15:34:33,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2018-12-09 15:34:33,146 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 29 states. [2018-12-09 15:34:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:33,313 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2018-12-09 15:34:33,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-12-09 15:34:33,313 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2018-12-09 15:34:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:33,314 INFO L225 Difference]: With dead ends: 74 [2018-12-09 15:34:33,314 INFO L226 Difference]: Without dead ends: 68 [2018-12-09 15:34:33,314 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2018-12-09 15:34:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-12-09 15:34:33,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-12-09 15:34:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-12-09 15:34:33,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2018-12-09 15:34:33,318 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2018-12-09 15:34:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:33,318 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2018-12-09 15:34:33,318 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-12-09 15:34:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2018-12-09 15:34:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-12-09 15:34:33,318 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:33,319 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:33,319 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:33,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash 329158911, now seen corresponding path program 13 times [2018-12-09 15:34:33,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:33,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:33,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:33,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:33,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:33,516 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:33,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:33,516 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:33,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:33,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:33,586 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:33,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2018-12-09 15:34:33,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-12-09 15:34:33,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-12-09 15:34:33,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2018-12-09 15:34:33,587 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 31 states. [2018-12-09 15:34:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:33,742 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2018-12-09 15:34:33,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-12-09 15:34:33,742 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 62 [2018-12-09 15:34:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:33,742 INFO L225 Difference]: With dead ends: 78 [2018-12-09 15:34:33,742 INFO L226 Difference]: Without dead ends: 72 [2018-12-09 15:34:33,743 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2018-12-09 15:34:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-12-09 15:34:33,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2018-12-09 15:34:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-12-09 15:34:33,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2018-12-09 15:34:33,746 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2018-12-09 15:34:33,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:33,746 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2018-12-09 15:34:33,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-12-09 15:34:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2018-12-09 15:34:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-12-09 15:34:33,747 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:33,747 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:33,747 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:33,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:33,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2128076093, now seen corresponding path program 14 times [2018-12-09 15:34:33,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:33,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:33,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:33,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:34:33,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:33,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:33,945 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:33,950 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-09 15:34:33,962 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-09 15:34:33,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:33,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:34,012 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:34,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2018-12-09 15:34:34,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-12-09 15:34:34,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-12-09 15:34:34,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2018-12-09 15:34:34,013 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 33 states. [2018-12-09 15:34:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:34,170 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2018-12-09 15:34:34,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-12-09 15:34:34,170 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 66 [2018-12-09 15:34:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:34,171 INFO L225 Difference]: With dead ends: 82 [2018-12-09 15:34:34,171 INFO L226 Difference]: Without dead ends: 76 [2018-12-09 15:34:34,171 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2018-12-09 15:34:34,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-12-09 15:34:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2018-12-09 15:34:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-12-09 15:34:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-12-09 15:34:34,177 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2018-12-09 15:34:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:34,177 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-12-09 15:34:34,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-12-09 15:34:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-12-09 15:34:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-12-09 15:34:34,178 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:34,178 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:34,178 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:34,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:34,178 INFO L82 PathProgramCache]: Analyzing trace with hash 139145863, now seen corresponding path program 15 times [2018-12-09 15:34:34,178 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:34,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:34,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:34,179 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:34,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:34,435 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:34,435 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:34,444 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-09 15:34:34,539 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-12-09 15:34:34,539 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:34,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:34,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:34,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2018-12-09 15:34:34,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-12-09 15:34:34,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-12-09 15:34:34,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 15:34:34,580 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 35 states. [2018-12-09 15:34:34,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:34,757 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2018-12-09 15:34:34,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-12-09 15:34:34,757 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 70 [2018-12-09 15:34:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:34,758 INFO L225 Difference]: With dead ends: 86 [2018-12-09 15:34:34,758 INFO L226 Difference]: Without dead ends: 80 [2018-12-09 15:34:34,758 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2018-12-09 15:34:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-12-09 15:34:34,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2018-12-09 15:34:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-12-09 15:34:34,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2018-12-09 15:34:34,761 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2018-12-09 15:34:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:34,761 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2018-12-09 15:34:34,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-12-09 15:34:34,761 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2018-12-09 15:34:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-12-09 15:34:34,761 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:34,761 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:34,762 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:34,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:34,762 INFO L82 PathProgramCache]: Analyzing trace with hash 605601867, now seen corresponding path program 16 times [2018-12-09 15:34:34,762 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:34,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:34,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:34,762 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:34,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:35,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:35,044 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:35,050 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-09 15:34:35,064 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-09 15:34:35,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:35,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:35,085 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:35,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:35,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2018-12-09 15:34:35,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-12-09 15:34:35,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-12-09 15:34:35,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2018-12-09 15:34:35,112 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 37 states. [2018-12-09 15:34:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:35,342 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2018-12-09 15:34:35,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-12-09 15:34:35,342 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 74 [2018-12-09 15:34:35,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:35,343 INFO L225 Difference]: With dead ends: 90 [2018-12-09 15:34:35,343 INFO L226 Difference]: Without dead ends: 84 [2018-12-09 15:34:35,343 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2018-12-09 15:34:35,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-12-09 15:34:35,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2018-12-09 15:34:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-12-09 15:34:35,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2018-12-09 15:34:35,346 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2018-12-09 15:34:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:35,347 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2018-12-09 15:34:35,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-12-09 15:34:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2018-12-09 15:34:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-12-09 15:34:35,347 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:35,347 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:35,348 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:35,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:35,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1596050447, now seen corresponding path program 17 times [2018-12-09 15:34:35,348 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:35,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:35,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:35,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:35,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:35,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:35,628 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:35,634 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-09 15:34:35,732 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-12-09 15:34:35,732 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:35,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:35,777 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:35,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2018-12-09 15:34:35,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-12-09 15:34:35,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-12-09 15:34:35,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2018-12-09 15:34:35,778 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 39 states. [2018-12-09 15:34:36,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:36,021 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2018-12-09 15:34:36,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-12-09 15:34:36,022 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 78 [2018-12-09 15:34:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:36,022 INFO L225 Difference]: With dead ends: 94 [2018-12-09 15:34:36,022 INFO L226 Difference]: Without dead ends: 88 [2018-12-09 15:34:36,023 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2018-12-09 15:34:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-12-09 15:34:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 85. [2018-12-09 15:34:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-12-09 15:34:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-12-09 15:34:36,025 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 78 [2018-12-09 15:34:36,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:36,025 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-12-09 15:34:36,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-12-09 15:34:36,025 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-12-09 15:34:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-12-09 15:34:36,025 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:36,025 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:36,026 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:36,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1820895789, now seen corresponding path program 18 times [2018-12-09 15:34:36,026 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:36,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:36,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:36,026 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:36,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:36,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:34:36,328 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/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 [2018-12-09 15:34:36,334 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-09 15:34:36,775 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2018-12-09 15:34:36,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-09 15:34:36,778 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:34:36,881 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-12-09 15:34:36,883 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-09 15:34:36,883 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:36,885 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:36,889 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:36,889 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:18 [2018-12-09 15:34:36,957 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:36,962 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:36,963 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:36,964 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:36,968 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:36,972 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:36,973 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,015 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,017 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,018 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,018 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,022 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,028 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,028 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,083 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,085 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,086 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,087 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,090 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,094 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,094 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,138 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,140 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,141 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,141 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,147 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,154 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,154 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,201 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,203 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,204 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,205 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,208 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,212 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,212 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,260 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,262 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,263 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,263 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,266 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,270 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,270 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,322 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,324 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,327 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,328 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,332 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,336 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,336 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2018-12-09 15:34:37,390 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,393 INFO L701 Elim1Store]: detected not equals via solver [2018-12-09 15:34:37,394 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 31 [2018-12-09 15:34:37,394 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,397 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,401 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,401 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:31, output treesize:13 [2018-12-09 15:34:37,421 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2018-12-09 15:34:37,431 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-12-09 15:34:37,432 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,438 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,446 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,446 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:27 [2018-12-09 15:34:37,521 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-12-09 15:34:37,528 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-12-09 15:34:37,529 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,539 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,553 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-12-09 15:34:37,555 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-09 15:34:37,555 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,558 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 15:34:37,570 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-12-09 15:34:37,640 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-12-09 15:34:37,641 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-09 15:34:37,641 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,644 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,654 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-12-09 15:34:37,661 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-12-09 15:34:37,661 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,688 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,699 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 15:34:37,699 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-12-09 15:34:37,772 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-12-09 15:34:37,773 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-09 15:34:37,773 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,776 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,786 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-12-09 15:34:37,792 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-12-09 15:34:37,793 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,808 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,819 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 15:34:37,819 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-12-09 15:34:37,896 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-12-09 15:34:37,899 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-09 15:34:37,899 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,905 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:37,917 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-12-09 15:34:37,923 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-12-09 15:34:37,924 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,931 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:37,942 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 15:34:37,943 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-12-09 15:34:38,025 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2018-12-09 15:34:38,026 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-12-09 15:34:38,026 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:38,029 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:38,039 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2018-12-09 15:34:38,046 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 34 [2018-12-09 15:34:38,047 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2018-12-09 15:34:38,056 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-12-09 15:34:38,069 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-12-09 15:34:38,070 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-12-09 15:34:38,166 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-12-09 15:34:38,167 INFO L478 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-12-09 15:34:38,167 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-12-09 15:34:38,168 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:38,169 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-12-09 15:34:38,169 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2018-12-09 15:34:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:34:38,219 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:34:38,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 78 [2018-12-09 15:34:38,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-12-09 15:34:38,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-12-09 15:34:38,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1001, Invalid=5005, Unknown=0, NotChecked=0, Total=6006 [2018-12-09 15:34:38,220 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 78 states. [2018-12-09 15:34:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:39,167 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2018-12-09 15:34:39,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-12-09 15:34:39,167 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 82 [2018-12-09 15:34:39,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:39,167 INFO L225 Difference]: With dead ends: 97 [2018-12-09 15:34:39,167 INFO L226 Difference]: Without dead ends: 91 [2018-12-09 15:34:39,169 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2476, Invalid=10406, Unknown=0, NotChecked=0, Total=12882 [2018-12-09 15:34:39,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-12-09 15:34:39,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-12-09 15:34:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-12-09 15:34:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2018-12-09 15:34:39,171 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2018-12-09 15:34:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:39,171 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2018-12-09 15:34:39,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-12-09 15:34:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2018-12-09 15:34:39,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-12-09 15:34:39,172 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 15:34:39,172 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:34:39,172 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-12-09 15:34:39,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:34:39,172 INFO L82 PathProgramCache]: Analyzing trace with hash 715216266, now seen corresponding path program 1 times [2018-12-09 15:34:39,172 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:34:39,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:34:39,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:39,173 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 15:34:39,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:34:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:34:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2018-12-09 15:34:39,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:34:39,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 15:34:39,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 15:34:39,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:34:39,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:34:39,193 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 4 states. [2018-12-09 15:34:39,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:34:39,200 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2018-12-09 15:34:39,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:34:39,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-12-09 15:34:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 15:34:39,200 INFO L225 Difference]: With dead ends: 88 [2018-12-09 15:34:39,200 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 15:34:39,201 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:34:39,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 15:34:39,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 15:34:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 15:34:39,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 15:34:39,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2018-12-09 15:34:39,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 15:34:39,201 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:34:39,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 15:34:39,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 15:34:39,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 15:34:39,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 15:34:39,276 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 15:34:39,277 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point L13-3(line 13) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-12-09 15:34:39,277 INFO L448 ceAbstractionStarter]: For program point L13-4(line 13) no Hoare annotation was computed. [2018-12-09 15:34:39,278 INFO L444 ceAbstractionStarter]: At program point L13-5(lines 13 15) the Hoare annotation is: (let ((.cse0 (= |main_~#a~0.offset| 0))) (or (and (<= 4 main_~i~0) (<= (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 12)) 2147483647) .cse0) (and (= main_~i~0 0) .cse0) (and (<= main_~i~0 3) (<= 1 main_~i~0) .cse0))) [2018-12-09 15:34:39,278 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-12-09 15:34:39,278 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2018-12-09 15:34:39,278 INFO L448 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-12-09 15:34:39,278 INFO L448 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-12-09 15:34:39,278 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2018-12-09 15:34:39,281 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-09 15:34:39,284 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-09 15:34:39,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:34:39 BoogieIcfgContainer [2018-12-09 15:34:39,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 15:34:39,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 15:34:39,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 15:34:39,286 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 15:34:39,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:34:29" (3/4) ... [2018-12-09 15:34:39,289 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 15:34:39,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 15:34:39,293 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 15:34:39,295 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-09 15:34:39,295 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-09 15:34:39,295 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 15:34:39,317 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d16f6edc-fdd0-473b-9c53-ae214824c1c3/bin-2019/uautomizer/witness.graphml [2018-12-09 15:34:39,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 15:34:39,317 INFO L168 Benchmark]: Toolchain (without parser) took 9702.28 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 233.8 MB). Free memory was 956.0 MB in the beginning and 872.6 MB in the end (delta: 83.4 MB). Peak memory consumption was 317.3 MB. Max. memory is 11.5 GB. [2018-12-09 15:34:39,318 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:34:39,318 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.23 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 15:34:39,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.60 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:34:39,319 INFO L168 Benchmark]: Boogie Preprocessor took 45.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 15:34:39,319 INFO L168 Benchmark]: RCFGBuilder took 120.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 15:34:39,319 INFO L168 Benchmark]: TraceAbstraction took 9361.77 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 111.7 MB). Free memory was 1.1 GB in the beginning and 880.5 MB in the end (delta: 221.6 MB). Peak memory consumption was 333.2 MB. Max. memory is 11.5 GB. [2018-12-09 15:34:39,319 INFO L168 Benchmark]: Witness Printer took 30.85 ms. Allocated memory is still 1.3 GB. Free memory was 880.5 MB in the beginning and 872.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2018-12-09 15:34:39,320 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 127.23 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.60 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -171.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 120.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9361.77 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 111.7 MB). Free memory was 1.1 GB in the beginning and 880.5 MB in the end (delta: 221.6 MB). Peak memory consumption was 333.2 MB. Max. memory is 11.5 GB. * Witness Printer took 30.85 ms. Allocated memory is still 1.3 GB. Free memory was 880.5 MB in the beginning and 872.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2018-12-09 15:34:39,323 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-12-09 15:34:39,323 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((4 <= i && unknown-#memory_int-unknown[a][a + 12] <= 2147483647) && a == 0) || (i == 0 && a == 0)) || ((i <= 3 && 1 <= i) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 4 error locations. SAFE Result, 9.3s OverallTime, 22 OverallIterations, 19 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 285 SDtfs, 895 SDslu, 3400 SDs, 0 SdLazy, 2677 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1464 GetRequests, 820 SyntacticMatches, 5 SemanticMatches, 639 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7632 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=21, 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: 0.0s AutomataMinimizationTime, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 24 NumberOfFragments, 38 HoareAnnotationTreeSize, 5 FomulaSimplifications, 176 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1865 NumberOfCodeBlocks, 1861 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1824 ConstructedInterpolants, 0 QuantifiedInterpolants, 346068 SizeOfPredicates, 194 NumberOfNonLiveVariables, 2528 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...