./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/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 d28857c86a3c83fc75b1b8cf8125f1c52a370911 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:12:32,025 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:12:32,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:12:32,034 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:12:32,035 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:12:32,035 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:12:32,036 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:12:32,037 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:12:32,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:12:32,039 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:12:32,039 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:12:32,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:12:32,040 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:12:32,041 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:12:32,042 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:12:32,042 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:12:32,043 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:12:32,044 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:12:32,046 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:12:32,046 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:12:32,047 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:12:32,047 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:12:32,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:12:32,049 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:12:32,049 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:12:32,049 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:12:32,050 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:12:32,050 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:12:32,051 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:12:32,051 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:12:32,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:12:32,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:12:32,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:12:32,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:12:32,052 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:12:32,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:12:32,053 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 15:12:32,063 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:12:32,063 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:12:32,063 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 15:12:32,063 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 15:12:32,064 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:12:32,064 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:12:32,064 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:12:32,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:12:32,064 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:12:32,064 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:12:32,065 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 15:12:32,065 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:12:32,066 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 15:12:32,066 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:12:32,067 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 15:12:32,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 15:12:32,067 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_f04d6ba2-da03-433a-9816-753fa4f53b25/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 -> d28857c86a3c83fc75b1b8cf8125f1c52a370911 [2018-11-18 15:12:32,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:12:32,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:12:32,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:12:32,102 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:12:32,102 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:12:32,103 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c [2018-11-18 15:12:32,146 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/data/cfe210538/f7bf52ef0efb48018bf9b12def7fd559/FLAG6a80b3467 [2018-11-18 15:12:32,533 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:12:32,534 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/sv-benchmarks/c/termination-numeric/java_LogBuiltIn_true-termination_true-no-overflow.c [2018-11-18 15:12:32,537 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/data/cfe210538/f7bf52ef0efb48018bf9b12def7fd559/FLAG6a80b3467 [2018-11-18 15:12:32,548 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/data/cfe210538/f7bf52ef0efb48018bf9b12def7fd559 [2018-11-18 15:12:32,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:12:32,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 15:12:32,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:12:32,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:12:32,555 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:12:32,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22909f40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32, skipping insertion in model container [2018-11-18 15:12:32,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:12:32,575 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:12:32,676 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:12:32,678 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:12:32,687 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:12:32,695 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:12:32,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32 WrapperNode [2018-11-18 15:12:32,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:12:32,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:12:32,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:12:32,695 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:12:32,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... [2018-11-18 15:12:32,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:12:32,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:12:32,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:12:32,719 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:12:32,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 15:12:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 15:12:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:12:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure mlog [2018-11-18 15:12:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 15:12:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 15:12:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure mlog [2018-11-18 15:12:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 15:12:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 15:12:32,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:12:32,907 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:12:32,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:12:32 BoogieIcfgContainer [2018-11-18 15:12:32,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:12:32,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 15:12:32,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 15:12:32,910 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 15:12:32,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 03:12:32" (1/3) ... [2018-11-18 15:12:32,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504714d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:12:32, skipping insertion in model container [2018-11-18 15:12:32,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:12:32" (2/3) ... [2018-11-18 15:12:32,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504714d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 03:12:32, skipping insertion in model container [2018-11-18 15:12:32,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:12:32" (3/3) ... [2018-11-18 15:12:32,912 INFO L112 eAbstractionObserver]: Analyzing ICFG java_LogBuiltIn_true-termination_true-no-overflow.c [2018-11-18 15:12:32,920 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 15:12:32,927 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 15:12:32,938 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 15:12:32,961 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:12:32,961 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 15:12:32,962 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 15:12:32,962 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 15:12:32,962 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:12:32,962 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:12:32,962 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 15:12:32,962 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:12:32,962 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 15:12:32,977 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-18 15:12:32,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 15:12:32,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:32,982 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:32,984 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:32,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:32,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1166998001, now seen corresponding path program 1 times [2018-11-18 15:12:32,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:32,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:33,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:12:33,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 15:12:33,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 15:12:33,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:12:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:12:33,144 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2018-11-18 15:12:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:33,220 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-18 15:12:33,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:12:33,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-11-18 15:12:33,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:33,227 INFO L225 Difference]: With dead ends: 33 [2018-11-18 15:12:33,227 INFO L226 Difference]: Without dead ends: 15 [2018-11-18 15:12:33,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-18 15:12:33,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-18 15:12:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-18 15:12:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-18 15:12:33,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-18 15:12:33,252 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2018-11-18 15:12:33,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:33,252 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-18 15:12:33,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 15:12:33,252 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-18 15:12:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 15:12:33,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:33,253 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:33,253 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:33,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:33,253 INFO L82 PathProgramCache]: Analyzing trace with hash -498613263, now seen corresponding path program 1 times [2018-11-18 15:12:33,253 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:33,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:33,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:12:33,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:12:33,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 15:12:33,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:12:33,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:12:33,294 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-11-18 15:12:33,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:33,328 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-18 15:12:33,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:12:33,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-18 15:12:33,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:33,329 INFO L225 Difference]: With dead ends: 23 [2018-11-18 15:12:33,329 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 15:12:33,330 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:12:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 15:12:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-11-18 15:12:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 15:12:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-18 15:12:33,333 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2018-11-18 15:12:33,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:33,334 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-18 15:12:33,334 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 15:12:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-18 15:12:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 15:12:33,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:33,334 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:33,335 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:33,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:33,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1722858080, now seen corresponding path program 1 times [2018-11-18 15:12:33,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:33,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:33,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:12:33,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 15:12:33,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 15:12:33,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:12:33,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:12:33,372 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2018-11-18 15:12:33,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:33,394 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-18 15:12:33,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:12:33,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 15:12:33,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:33,395 INFO L225 Difference]: With dead ends: 20 [2018-11-18 15:12:33,395 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 15:12:33,395 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:12:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 15:12:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 15:12:33,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 15:12:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-18 15:12:33,398 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2018-11-18 15:12:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:33,399 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-18 15:12:33,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 15:12:33,399 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-18 15:12:33,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 15:12:33,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:33,399 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:33,400 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:33,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:33,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1384465031, now seen corresponding path program 1 times [2018-11-18 15:12:33,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:33,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:33,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,457 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:33,458 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:33,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,482 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,509 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:33,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 15:12:33,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 15:12:33,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:12:33,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:12:33,510 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2018-11-18 15:12:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:33,538 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-18 15:12:33,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 15:12:33,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-11-18 15:12:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:33,539 INFO L225 Difference]: With dead ends: 27 [2018-11-18 15:12:33,539 INFO L226 Difference]: Without dead ends: 26 [2018-11-18 15:12:33,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 15:12:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-18 15:12:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2018-11-18 15:12:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 15:12:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-18 15:12:33,542 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2018-11-18 15:12:33,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:33,542 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-18 15:12:33,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 15:12:33,542 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-18 15:12:33,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 15:12:33,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:33,543 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:33,543 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:33,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:33,543 INFO L82 PathProgramCache]: Analyzing trace with hash 823326877, now seen corresponding path program 2 times [2018-11-18 15:12:33,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:33,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:33,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:33,607 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:33,619 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:12:33,628 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:12:33,629 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:33,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,651 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:33,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-18 15:12:33,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 15:12:33,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 15:12:33,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 15:12:33,652 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 8 states. [2018-11-18 15:12:33,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:33,700 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-18 15:12:33,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 15:12:33,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2018-11-18 15:12:33,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:33,702 INFO L225 Difference]: With dead ends: 33 [2018-11-18 15:12:33,702 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 15:12:33,702 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-11-18 15:12:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 15:12:33,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-11-18 15:12:33,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 15:12:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-18 15:12:33,708 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 24 [2018-11-18 15:12:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:33,708 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-18 15:12:33,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 15:12:33,708 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-18 15:12:33,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-18 15:12:33,709 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:33,709 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:33,709 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:33,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:33,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1808352819, now seen corresponding path program 3 times [2018-11-18 15:12:33,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:33,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:33,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:33,784 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:33,785 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:33,799 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:12:33,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 15:12:33,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:33,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:33,818 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:33,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:33,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 15:12:33,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 15:12:33,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 15:12:33,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-11-18 15:12:33,838 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 10 states. [2018-11-18 15:12:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:33,920 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2018-11-18 15:12:33,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 15:12:33,923 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 30 [2018-11-18 15:12:33,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:33,924 INFO L225 Difference]: With dead ends: 39 [2018-11-18 15:12:33,924 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 15:12:33,925 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-11-18 15:12:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 15:12:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-11-18 15:12:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 15:12:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2018-11-18 15:12:33,934 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2018-11-18 15:12:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:33,934 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2018-11-18 15:12:33,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 15:12:33,934 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2018-11-18 15:12:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 15:12:33,935 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:33,935 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:33,935 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:33,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash -2068280503, now seen corresponding path program 4 times [2018-11-18 15:12:33,936 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:33,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:33,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:33,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,044 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:34,044 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:34,053 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 15:12:34,063 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 15:12:34,063 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:34,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:34,073 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:34,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 15:12:34,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 15:12:34,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 15:12:34,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2018-11-18 15:12:34,089 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 12 states. [2018-11-18 15:12:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:34,150 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2018-11-18 15:12:34,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 15:12:34,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2018-11-18 15:12:34,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:34,151 INFO L225 Difference]: With dead ends: 45 [2018-11-18 15:12:34,151 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 15:12:34,151 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2018-11-18 15:12:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 15:12:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-18 15:12:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 15:12:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2018-11-18 15:12:34,155 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2018-11-18 15:12:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:34,155 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2018-11-18 15:12:34,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 15:12:34,155 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2018-11-18 15:12:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-18 15:12:34,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:34,156 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:34,156 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:34,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash -2010568737, now seen corresponding path program 5 times [2018-11-18 15:12:34,157 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:34,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:34,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,157 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:34,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:34,269 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:34,275 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 15:12:34,290 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-18 15:12:34,291 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:34,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:34,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-18 15:12:34,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 15:12:34,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 15:12:34,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-18 15:12:34,317 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 14 states. [2018-11-18 15:12:34,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:34,409 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-11-18 15:12:34,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 15:12:34,410 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2018-11-18 15:12:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:34,410 INFO L225 Difference]: With dead ends: 51 [2018-11-18 15:12:34,410 INFO L226 Difference]: Without dead ends: 50 [2018-11-18 15:12:34,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2018-11-18 15:12:34,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-18 15:12:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-11-18 15:12:34,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 15:12:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-11-18 15:12:34,414 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2018-11-18 15:12:34,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:34,414 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-11-18 15:12:34,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 15:12:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-11-18 15:12:34,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 15:12:34,415 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:34,415 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:34,416 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:34,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:34,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2103739403, now seen corresponding path program 6 times [2018-11-18 15:12:34,416 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:34,416 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:34,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,417 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:34,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:34,510 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:34,519 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 15:12:34,534 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 15:12:34,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:34,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:34,545 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,560 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:34,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-18 15:12:34,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 15:12:34,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 15:12:34,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2018-11-18 15:12:34,561 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 16 states. [2018-11-18 15:12:34,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:34,648 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2018-11-18 15:12:34,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 15:12:34,648 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-11-18 15:12:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:34,649 INFO L225 Difference]: With dead ends: 57 [2018-11-18 15:12:34,649 INFO L226 Difference]: Without dead ends: 56 [2018-11-18 15:12:34,650 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2018-11-18 15:12:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-18 15:12:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2018-11-18 15:12:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 15:12:34,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2018-11-18 15:12:34,655 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2018-11-18 15:12:34,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:34,655 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2018-11-18 15:12:34,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 15:12:34,655 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2018-11-18 15:12:34,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-18 15:12:34,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:34,656 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:34,658 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:34,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1992812427, now seen corresponding path program 7 times [2018-11-18 15:12:34,658 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:34,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:34,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,659 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:34,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:34,792 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:34,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:34,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:34,825 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:34,847 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:34,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-18 15:12:34,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 15:12:34,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 15:12:34,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-18 15:12:34,848 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 18 states. [2018-11-18 15:12:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:34,966 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-11-18 15:12:34,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 15:12:34,966 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2018-11-18 15:12:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:34,967 INFO L225 Difference]: With dead ends: 63 [2018-11-18 15:12:34,967 INFO L226 Difference]: Without dead ends: 62 [2018-11-18 15:12:34,967 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=205, Invalid=445, Unknown=0, NotChecked=0, Total=650 [2018-11-18 15:12:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-18 15:12:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-18 15:12:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-18 15:12:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-11-18 15:12:34,970 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 54 [2018-11-18 15:12:34,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:34,970 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-11-18 15:12:34,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 15:12:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-11-18 15:12:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 15:12:34,971 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:34,971 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:34,972 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:34,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:34,972 INFO L82 PathProgramCache]: Analyzing trace with hash -744568159, now seen corresponding path program 8 times [2018-11-18 15:12:34,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:34,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:34,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:34,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:35,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:35,136 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:35,148 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:12:35,162 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:12:35,162 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:35,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:35,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:35,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-18 15:12:35,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 15:12:35,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 15:12:35,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2018-11-18 15:12:35,189 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 20 states. [2018-11-18 15:12:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:35,299 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2018-11-18 15:12:35,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 15:12:35,299 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2018-11-18 15:12:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:35,300 INFO L225 Difference]: With dead ends: 69 [2018-11-18 15:12:35,300 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 15:12:35,301 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2018-11-18 15:12:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 15:12:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2018-11-18 15:12:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-18 15:12:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2018-11-18 15:12:35,305 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2018-11-18 15:12:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:35,306 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2018-11-18 15:12:35,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 15:12:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2018-11-18 15:12:35,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 15:12:35,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:35,307 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:35,307 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:35,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1783137591, now seen corresponding path program 9 times [2018-11-18 15:12:35,307 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:35,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:35,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:35,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:35,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:35,467 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:35,467 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:35,477 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:12:35,496 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-18 15:12:35,496 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:35,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 261 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:35,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:35,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-18 15:12:35,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-18 15:12:35,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-18 15:12:35,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2018-11-18 15:12:35,530 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 22 states. [2018-11-18 15:12:35,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:35,635 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2018-11-18 15:12:35,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 15:12:35,635 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 66 [2018-11-18 15:12:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:35,636 INFO L225 Difference]: With dead ends: 75 [2018-11-18 15:12:35,636 INFO L226 Difference]: Without dead ends: 74 [2018-11-18 15:12:35,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2018-11-18 15:12:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-11-18 15:12:35,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2018-11-18 15:12:35,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-18 15:12:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2018-11-18 15:12:35,641 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 66 [2018-11-18 15:12:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:35,641 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2018-11-18 15:12:35,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-18 15:12:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2018-11-18 15:12:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 15:12:35,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:35,642 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:35,643 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:35,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:35,643 INFO L82 PathProgramCache]: Analyzing trace with hash -467306675, now seen corresponding path program 10 times [2018-11-18 15:12:35,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:35,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:35,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:35,644 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:35,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:35,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:35,790 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:35,796 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 15:12:35,811 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 15:12:35,811 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:35,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:35,821 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:35,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:35,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-18 15:12:35,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 15:12:35,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 15:12:35,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2018-11-18 15:12:35,837 INFO L87 Difference]: Start difference. First operand 73 states and 73 transitions. Second operand 24 states. [2018-11-18 15:12:35,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:35,935 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-11-18 15:12:35,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 15:12:35,935 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 72 [2018-11-18 15:12:35,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:35,936 INFO L225 Difference]: With dead ends: 81 [2018-11-18 15:12:35,936 INFO L226 Difference]: Without dead ends: 80 [2018-11-18 15:12:35,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=364, Invalid=826, Unknown=0, NotChecked=0, Total=1190 [2018-11-18 15:12:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-18 15:12:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2018-11-18 15:12:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-18 15:12:35,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-11-18 15:12:35,941 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 72 [2018-11-18 15:12:35,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:35,941 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-11-18 15:12:35,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 15:12:35,942 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-11-18 15:12:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-18 15:12:35,942 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:35,943 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:35,943 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:35,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:35,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1194458909, now seen corresponding path program 11 times [2018-11-18 15:12:35,943 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:35,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:35,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:35,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:35,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:36,192 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:36,193 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:36,199 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 15:12:36,233 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-18 15:12:36,233 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:36,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:36,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:36,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-18 15:12:36,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 15:12:36,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 15:12:36,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2018-11-18 15:12:36,268 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 26 states. [2018-11-18 15:12:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:36,428 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2018-11-18 15:12:36,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-18 15:12:36,429 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2018-11-18 15:12:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:36,430 INFO L225 Difference]: With dead ends: 87 [2018-11-18 15:12:36,430 INFO L226 Difference]: Without dead ends: 86 [2018-11-18 15:12:36,430 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=427, Invalid=979, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 15:12:36,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-11-18 15:12:36,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2018-11-18 15:12:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-11-18 15:12:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2018-11-18 15:12:36,437 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2018-11-18 15:12:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:36,437 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2018-11-18 15:12:36,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 15:12:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2018-11-18 15:12:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-18 15:12:36,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:36,438 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:36,438 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:36,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:36,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1542290951, now seen corresponding path program 12 times [2018-11-18 15:12:36,439 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:36,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:36,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:36,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:36,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:36,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:36,663 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:36,682 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 15:12:36,718 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-18 15:12:36,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:36,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:36,733 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:36,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:36,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-18 15:12:36,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-18 15:12:36,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-18 15:12:36,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2018-11-18 15:12:36,751 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 28 states. [2018-11-18 15:12:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:36,900 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-11-18 15:12:36,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-18 15:12:36,900 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 84 [2018-11-18 15:12:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:36,901 INFO L225 Difference]: With dead ends: 93 [2018-11-18 15:12:36,901 INFO L226 Difference]: Without dead ends: 92 [2018-11-18 15:12:36,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=495, Invalid=1145, Unknown=0, NotChecked=0, Total=1640 [2018-11-18 15:12:36,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-18 15:12:36,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2018-11-18 15:12:36,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-18 15:12:36,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-11-18 15:12:36,906 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 84 [2018-11-18 15:12:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:36,907 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-11-18 15:12:36,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-18 15:12:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-11-18 15:12:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-18 15:12:36,908 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:36,908 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:36,908 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:36,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:36,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1678026097, now seen corresponding path program 13 times [2018-11-18 15:12:36,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:36,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:36,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:36,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:36,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:37,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:37,123 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:37,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:37,152 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:37,167 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 533 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:37,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:37,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-18 15:12:37,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-18 15:12:37,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-18 15:12:37,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2018-11-18 15:12:37,192 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 30 states. [2018-11-18 15:12:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:37,404 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2018-11-18 15:12:37,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-18 15:12:37,405 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 90 [2018-11-18 15:12:37,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:37,406 INFO L225 Difference]: With dead ends: 99 [2018-11-18 15:12:37,406 INFO L226 Difference]: Without dead ends: 98 [2018-11-18 15:12:37,406 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=568, Invalid=1324, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 15:12:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-18 15:12:37,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2018-11-18 15:12:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-11-18 15:12:37,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2018-11-18 15:12:37,410 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2018-11-18 15:12:37,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:37,410 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2018-11-18 15:12:37,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-18 15:12:37,410 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2018-11-18 15:12:37,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-18 15:12:37,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:37,411 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:37,411 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:37,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:37,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1187572389, now seen corresponding path program 14 times [2018-11-18 15:12:37,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:37,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:37,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:37,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:37,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:37,670 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:37,670 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:37,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:12:37,696 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:12:37,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:37,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 616 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:37,739 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:37,739 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-18 15:12:37,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-18 15:12:37,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-18 15:12:37,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2018-11-18 15:12:37,740 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 32 states. [2018-11-18 15:12:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:37,932 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2018-11-18 15:12:37,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-18 15:12:37,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 96 [2018-11-18 15:12:37,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:37,933 INFO L225 Difference]: With dead ends: 105 [2018-11-18 15:12:37,933 INFO L226 Difference]: Without dead ends: 104 [2018-11-18 15:12:37,933 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=646, Invalid=1516, Unknown=0, NotChecked=0, Total=2162 [2018-11-18 15:12:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-18 15:12:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2018-11-18 15:12:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-11-18 15:12:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2018-11-18 15:12:37,936 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 96 [2018-11-18 15:12:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:37,936 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2018-11-18 15:12:37,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-18 15:12:37,936 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2018-11-18 15:12:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-18 15:12:37,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:37,937 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:37,938 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:37,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -252472773, now seen corresponding path program 15 times [2018-11-18 15:12:37,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:37,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:37,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:37,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:37,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:38,183 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:38,183 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:38,189 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:12:38,221 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-18 15:12:38,221 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:38,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 705 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:38,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:38,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-18 15:12:38,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 15:12:38,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 15:12:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 15:12:38,262 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand 34 states. [2018-11-18 15:12:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:38,454 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-11-18 15:12:38,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-18 15:12:38,454 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 102 [2018-11-18 15:12:38,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:38,454 INFO L225 Difference]: With dead ends: 111 [2018-11-18 15:12:38,454 INFO L226 Difference]: Without dead ends: 110 [2018-11-18 15:12:38,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=729, Invalid=1721, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 15:12:38,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-18 15:12:38,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2018-11-18 15:12:38,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-18 15:12:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-11-18 15:12:38,457 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2018-11-18 15:12:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:38,457 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-11-18 15:12:38,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 15:12:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-11-18 15:12:38,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-18 15:12:38,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:38,458 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:38,458 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:38,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:38,459 INFO L82 PathProgramCache]: Analyzing trace with hash 53195089, now seen corresponding path program 16 times [2018-11-18 15:12:38,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:38,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:38,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:38,459 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:38,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:38,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:38,810 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:38,816 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 15:12:38,833 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 15:12:38,834 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:38,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:38,878 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:38,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-18 15:12:38,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-18 15:12:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-18 15:12:38,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2018-11-18 15:12:38,879 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand 36 states. [2018-11-18 15:12:39,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:39,123 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2018-11-18 15:12:39,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-18 15:12:39,123 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 108 [2018-11-18 15:12:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:39,123 INFO L225 Difference]: With dead ends: 117 [2018-11-18 15:12:39,123 INFO L226 Difference]: Without dead ends: 116 [2018-11-18 15:12:39,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=817, Invalid=1939, Unknown=0, NotChecked=0, Total=2756 [2018-11-18 15:12:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-11-18 15:12:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2018-11-18 15:12:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-11-18 15:12:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 115 transitions. [2018-11-18 15:12:39,126 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 115 transitions. Word has length 108 [2018-11-18 15:12:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:39,127 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 115 transitions. [2018-11-18 15:12:39,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-18 15:12:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 115 transitions. [2018-11-18 15:12:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-18 15:12:39,128 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:39,128 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:39,128 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:39,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash -128342041, now seen corresponding path program 17 times [2018-11-18 15:12:39,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:39,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:39,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:39,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:39,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:39,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:39,529 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:39,541 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 15:12:39,634 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-18 15:12:39,634 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:39,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 0 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:39,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:39,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-18 15:12:39,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-18 15:12:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-18 15:12:39,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 15:12:39,680 INFO L87 Difference]: Start difference. First operand 115 states and 115 transitions. Second operand 38 states. [2018-11-18 15:12:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:39,942 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions. [2018-11-18 15:12:39,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-18 15:12:39,943 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 114 [2018-11-18 15:12:39,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:39,943 INFO L225 Difference]: With dead ends: 123 [2018-11-18 15:12:39,944 INFO L226 Difference]: Without dead ends: 122 [2018-11-18 15:12:39,944 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 15:12:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-11-18 15:12:39,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2018-11-18 15:12:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-11-18 15:12:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 121 transitions. [2018-11-18 15:12:39,948 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 121 transitions. Word has length 114 [2018-11-18 15:12:39,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:39,948 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 121 transitions. [2018-11-18 15:12:39,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-18 15:12:39,948 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 121 transitions. [2018-11-18 15:12:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-18 15:12:39,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:39,949 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:39,949 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:39,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:39,949 INFO L82 PathProgramCache]: Analyzing trace with hash -744630787, now seen corresponding path program 18 times [2018-11-18 15:12:39,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:39,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:39,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:39,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:39,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:40,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:40,383 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:40,390 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 15:12:40,440 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-18 15:12:40,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:40,443 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:40,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:40,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:40,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-18 15:12:40,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-18 15:12:40,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-18 15:12:40,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 15:12:40,472 INFO L87 Difference]: Start difference. First operand 121 states and 121 transitions. Second operand 40 states. [2018-11-18 15:12:40,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:40,712 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2018-11-18 15:12:40,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-18 15:12:40,712 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 120 [2018-11-18 15:12:40,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:40,712 INFO L225 Difference]: With dead ends: 129 [2018-11-18 15:12:40,713 INFO L226 Difference]: Without dead ends: 128 [2018-11-18 15:12:40,713 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2018-11-18 15:12:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-11-18 15:12:40,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2018-11-18 15:12:40,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-11-18 15:12:40,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2018-11-18 15:12:40,717 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 120 [2018-11-18 15:12:40,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:40,717 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2018-11-18 15:12:40,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-18 15:12:40,718 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2018-11-18 15:12:40,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-18 15:12:40,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:40,718 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:40,718 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:40,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash 374381459, now seen corresponding path program 19 times [2018-11-18 15:12:40,719 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:40,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:40,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:40,719 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:40,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:41,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:41,116 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:41,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:41,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 0 proven. 1121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:41,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:41,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-18 15:12:41,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-18 15:12:41,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-18 15:12:41,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2018-11-18 15:12:41,180 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand 42 states. [2018-11-18 15:12:41,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:41,418 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2018-11-18 15:12:41,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-18 15:12:41,418 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 126 [2018-11-18 15:12:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:41,419 INFO L225 Difference]: With dead ends: 135 [2018-11-18 15:12:41,419 INFO L226 Difference]: Without dead ends: 134 [2018-11-18 15:12:41,420 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1111, Invalid=2671, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 15:12:41,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2018-11-18 15:12:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2018-11-18 15:12:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2018-11-18 15:12:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 133 transitions. [2018-11-18 15:12:41,422 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 133 transitions. Word has length 126 [2018-11-18 15:12:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:41,422 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 133 transitions. [2018-11-18 15:12:41,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-18 15:12:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 133 transitions. [2018-11-18 15:12:41,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-18 15:12:41,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:41,423 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:41,423 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:41,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:41,424 INFO L82 PathProgramCache]: Analyzing trace with hash 906123433, now seen corresponding path program 20 times [2018-11-18 15:12:41,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:41,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:41,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:41,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:41,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:41,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:41,845 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:41,845 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:41,851 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:12:41,870 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:12:41,870 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:41,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1240 backedges. 0 proven. 1240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:41,907 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:41,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-18 15:12:41,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-18 15:12:41,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-18 15:12:41,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2018-11-18 15:12:41,908 INFO L87 Difference]: Start difference. First operand 133 states and 133 transitions. Second operand 44 states. [2018-11-18 15:12:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:42,197 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2018-11-18 15:12:42,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-18 15:12:42,198 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 132 [2018-11-18 15:12:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:42,198 INFO L225 Difference]: With dead ends: 141 [2018-11-18 15:12:42,198 INFO L226 Difference]: Without dead ends: 140 [2018-11-18 15:12:42,199 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1219, Invalid=2941, Unknown=0, NotChecked=0, Total=4160 [2018-11-18 15:12:42,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-11-18 15:12:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2018-11-18 15:12:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-11-18 15:12:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2018-11-18 15:12:42,201 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 132 [2018-11-18 15:12:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:42,201 INFO L480 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2018-11-18 15:12:42,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-18 15:12:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2018-11-18 15:12:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-18 15:12:42,202 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:42,202 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:42,202 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:42,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:42,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1837404865, now seen corresponding path program 21 times [2018-11-18 15:12:42,202 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:42,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:42,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:42,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:42,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:42,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:42,634 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:42,639 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:12:42,692 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-18 15:12:42,692 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:42,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:42,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1365 backedges. 0 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:42,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:42,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-18 15:12:42,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-18 15:12:42,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-18 15:12:42,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2018-11-18 15:12:42,725 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand 46 states. [2018-11-18 15:12:43,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:43,012 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2018-11-18 15:12:43,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-18 15:12:43,012 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 138 [2018-11-18 15:12:43,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:43,012 INFO L225 Difference]: With dead ends: 147 [2018-11-18 15:12:43,013 INFO L226 Difference]: Without dead ends: 146 [2018-11-18 15:12:43,014 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2018-11-18 15:12:43,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-11-18 15:12:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-11-18 15:12:43,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-11-18 15:12:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2018-11-18 15:12:43,017 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 138 [2018-11-18 15:12:43,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:43,018 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2018-11-18 15:12:43,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-18 15:12:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2018-11-18 15:12:43,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-18 15:12:43,018 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:43,019 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:43,019 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:43,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:43,019 INFO L82 PathProgramCache]: Analyzing trace with hash -339986091, now seen corresponding path program 22 times [2018-11-18 15:12:43,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:43,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:43,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:43,020 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:43,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:43,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:43,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:43,516 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:43,522 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 15:12:43,543 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 15:12:43,543 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:43,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:43,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:43,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-18 15:12:43,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-18 15:12:43,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-18 15:12:43,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2018-11-18 15:12:43,577 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand 48 states. [2018-11-18 15:12:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:43,877 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2018-11-18 15:12:43,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-18 15:12:43,877 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 144 [2018-11-18 15:12:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:43,878 INFO L225 Difference]: With dead ends: 153 [2018-11-18 15:12:43,878 INFO L226 Difference]: Without dead ends: 152 [2018-11-18 15:12:43,879 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1450, Invalid=3520, Unknown=0, NotChecked=0, Total=4970 [2018-11-18 15:12:43,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-11-18 15:12:43,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2018-11-18 15:12:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2018-11-18 15:12:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 151 transitions. [2018-11-18 15:12:43,883 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 151 transitions. Word has length 144 [2018-11-18 15:12:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:43,883 INFO L480 AbstractCegarLoop]: Abstraction has 151 states and 151 transitions. [2018-11-18 15:12:43,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-18 15:12:43,883 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 151 transitions. [2018-11-18 15:12:43,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-18 15:12:43,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:43,884 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:43,884 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:43,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:43,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1476205803, now seen corresponding path program 23 times [2018-11-18 15:12:43,884 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:43,884 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:43,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:43,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:43,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:44,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1633 backedges. 0 proven. 1633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:44,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:44,469 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:44,475 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 15:12:44,567 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-18 15:12:44,567 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:44,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1633 backedges. 0 proven. 1633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:44,599 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:44,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-18 15:12:44,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-18 15:12:44,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-18 15:12:44,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2018-11-18 15:12:44,601 INFO L87 Difference]: Start difference. First operand 151 states and 151 transitions. Second operand 50 states. [2018-11-18 15:12:44,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:44,916 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2018-11-18 15:12:44,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-18 15:12:44,916 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 150 [2018-11-18 15:12:44,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:44,916 INFO L225 Difference]: With dead ends: 159 [2018-11-18 15:12:44,916 INFO L226 Difference]: Without dead ends: 158 [2018-11-18 15:12:44,917 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1573, Invalid=3829, Unknown=0, NotChecked=0, Total=5402 [2018-11-18 15:12:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2018-11-18 15:12:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2018-11-18 15:12:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-11-18 15:12:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2018-11-18 15:12:44,920 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 150 [2018-11-18 15:12:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:44,921 INFO L480 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2018-11-18 15:12:44,921 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-18 15:12:44,921 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2018-11-18 15:12:44,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-18 15:12:44,922 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:44,922 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:44,922 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:44,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:44,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1179748351, now seen corresponding path program 24 times [2018-11-18 15:12:44,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:44,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:44,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:44,923 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:44,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 0 proven. 1776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:45,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:45,443 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:45,454 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 15:12:45,519 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-18 15:12:45,519 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:45,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1776 backedges. 0 proven. 1776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:45,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:45,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-18 15:12:45,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-18 15:12:45,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-18 15:12:45,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2018-11-18 15:12:45,553 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand 52 states. [2018-11-18 15:12:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:45,899 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions. [2018-11-18 15:12:45,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-18 15:12:45,899 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 156 [2018-11-18 15:12:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:45,900 INFO L225 Difference]: With dead ends: 165 [2018-11-18 15:12:45,900 INFO L226 Difference]: Without dead ends: 164 [2018-11-18 15:12:45,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1701, Invalid=4151, Unknown=0, NotChecked=0, Total=5852 [2018-11-18 15:12:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-11-18 15:12:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 163. [2018-11-18 15:12:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-11-18 15:12:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 163 transitions. [2018-11-18 15:12:45,904 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 163 transitions. Word has length 156 [2018-11-18 15:12:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:45,905 INFO L480 AbstractCegarLoop]: Abstraction has 163 states and 163 transitions. [2018-11-18 15:12:45,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-18 15:12:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 163 transitions. [2018-11-18 15:12:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-18 15:12:45,906 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:45,906 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:45,906 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:45,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:45,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1250383209, now seen corresponding path program 25 times [2018-11-18 15:12:45,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:45,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:45,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:45,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:45,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:46,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:46,468 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:46,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:46,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1925 backedges. 0 proven. 1925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:46,547 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:46,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-18 15:12:46,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-18 15:12:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-18 15:12:46,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2018-11-18 15:12:46,548 INFO L87 Difference]: Start difference. First operand 163 states and 163 transitions. Second operand 54 states. [2018-11-18 15:12:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:46,925 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2018-11-18 15:12:46,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-18 15:12:46,926 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 162 [2018-11-18 15:12:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:46,927 INFO L225 Difference]: With dead ends: 171 [2018-11-18 15:12:46,927 INFO L226 Difference]: Without dead ends: 170 [2018-11-18 15:12:46,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1834, Invalid=4486, Unknown=0, NotChecked=0, Total=6320 [2018-11-18 15:12:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-11-18 15:12:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2018-11-18 15:12:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2018-11-18 15:12:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2018-11-18 15:12:46,931 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 162 [2018-11-18 15:12:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:46,932 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2018-11-18 15:12:46,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-18 15:12:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2018-11-18 15:12:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-11-18 15:12:46,933 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:46,933 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:46,933 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:46,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:46,933 INFO L82 PathProgramCache]: Analyzing trace with hash 675026093, now seen corresponding path program 26 times [2018-11-18 15:12:46,933 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:46,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:46,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:46,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:12:46,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:47,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:47,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:47,547 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:47,553 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 15:12:47,577 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 15:12:47,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:47,580 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:47,613 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:47,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-11-18 15:12:47,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-18 15:12:47,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-18 15:12:47,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 15:12:47,615 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand 56 states. [2018-11-18 15:12:48,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:48,007 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2018-11-18 15:12:48,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-18 15:12:48,007 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 168 [2018-11-18 15:12:48,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:48,008 INFO L225 Difference]: With dead ends: 177 [2018-11-18 15:12:48,008 INFO L226 Difference]: Without dead ends: 176 [2018-11-18 15:12:48,008 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1972, Invalid=4834, Unknown=0, NotChecked=0, Total=6806 [2018-11-18 15:12:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-11-18 15:12:48,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-11-18 15:12:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-11-18 15:12:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 175 transitions. [2018-11-18 15:12:48,011 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 175 transitions. Word has length 168 [2018-11-18 15:12:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:48,011 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 175 transitions. [2018-11-18 15:12:48,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-18 15:12:48,011 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 175 transitions. [2018-11-18 15:12:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-18 15:12:48,012 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:48,012 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:48,012 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:48,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:48,012 INFO L82 PathProgramCache]: Analyzing trace with hash 487659075, now seen corresponding path program 27 times [2018-11-18 15:12:48,012 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:48,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:48,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:48,013 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:48,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 0 proven. 2241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:48,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:48,706 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:48,715 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 15:12:48,804 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-18 15:12:48,804 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:48,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 0 proven. 2241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:48,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:48,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-11-18 15:12:48,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-18 15:12:48,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-18 15:12:48,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2018-11-18 15:12:48,846 INFO L87 Difference]: Start difference. First operand 175 states and 175 transitions. Second operand 58 states. [2018-11-18 15:12:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:49,340 INFO L93 Difference]: Finished difference Result 183 states and 183 transitions. [2018-11-18 15:12:49,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-18 15:12:49,340 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 174 [2018-11-18 15:12:49,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:49,341 INFO L225 Difference]: With dead ends: 183 [2018-11-18 15:12:49,341 INFO L226 Difference]: Without dead ends: 182 [2018-11-18 15:12:49,341 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2115, Invalid=5195, Unknown=0, NotChecked=0, Total=7310 [2018-11-18 15:12:49,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-11-18 15:12:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2018-11-18 15:12:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-11-18 15:12:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 181 transitions. [2018-11-18 15:12:49,344 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 181 transitions. Word has length 174 [2018-11-18 15:12:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:49,344 INFO L480 AbstractCegarLoop]: Abstraction has 181 states and 181 transitions. [2018-11-18 15:12:49,345 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-18 15:12:49,345 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 181 transitions. [2018-11-18 15:12:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-18 15:12:49,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:49,346 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:49,346 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:49,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:49,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1128795993, now seen corresponding path program 28 times [2018-11-18 15:12:49,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:49,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:49,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:49,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:49,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2408 backedges. 0 proven. 2408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:50,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:50,109 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:50,117 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 15:12:50,156 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 15:12:50,156 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:50,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2408 backedges. 0 proven. 2408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:50,220 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:50,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-11-18 15:12:50,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-11-18 15:12:50,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-11-18 15:12:50,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2018-11-18 15:12:50,222 INFO L87 Difference]: Start difference. First operand 181 states and 181 transitions. Second operand 60 states. [2018-11-18 15:12:50,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:50,782 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2018-11-18 15:12:50,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-18 15:12:50,782 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 180 [2018-11-18 15:12:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:50,783 INFO L225 Difference]: With dead ends: 189 [2018-11-18 15:12:50,783 INFO L226 Difference]: Without dead ends: 188 [2018-11-18 15:12:50,784 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2263, Invalid=5569, Unknown=0, NotChecked=0, Total=7832 [2018-11-18 15:12:50,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-11-18 15:12:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2018-11-18 15:12:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2018-11-18 15:12:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2018-11-18 15:12:50,788 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 180 [2018-11-18 15:12:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:50,788 INFO L480 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2018-11-18 15:12:50,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-11-18 15:12:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2018-11-18 15:12:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-18 15:12:50,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:50,789 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:50,790 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:50,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:50,790 INFO L82 PathProgramCache]: Analyzing trace with hash -462856209, now seen corresponding path program 29 times [2018-11-18 15:12:50,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:50,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:50,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:50,791 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:50,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 0 proven. 2581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:51,584 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:12:51,584 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:12:51,592 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 15:12:51,787 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-18 15:12:51,787 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 15:12:51,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:12:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2581 backedges. 0 proven. 2581 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:51,826 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:12:51,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-11-18 15:12:51,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-18 15:12:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-18 15:12:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2018-11-18 15:12:51,827 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand 62 states. [2018-11-18 15:12:52,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:52,309 INFO L93 Difference]: Finished difference Result 195 states and 195 transitions. [2018-11-18 15:12:52,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-18 15:12:52,310 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 186 [2018-11-18 15:12:52,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:52,310 INFO L225 Difference]: With dead ends: 195 [2018-11-18 15:12:52,310 INFO L226 Difference]: Without dead ends: 194 [2018-11-18 15:12:52,311 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2416, Invalid=5956, Unknown=0, NotChecked=0, Total=8372 [2018-11-18 15:12:52,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-11-18 15:12:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2018-11-18 15:12:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-11-18 15:12:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 193 transitions. [2018-11-18 15:12:52,315 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 193 transitions. Word has length 186 [2018-11-18 15:12:52,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:52,316 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 193 transitions. [2018-11-18 15:12:52,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-18 15:12:52,316 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 193 transitions. [2018-11-18 15:12:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-18 15:12:52,317 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 15:12:52,317 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:12:52,317 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 15:12:52,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:12:52,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1513449477, now seen corresponding path program 30 times [2018-11-18 15:12:52,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:12:52,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:12:52,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:52,318 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 15:12:52,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:12:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:12:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2760 backedges. 2760 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:12:54,488 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:12:54,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2018-11-18 15:12:54,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2018-11-18 15:12:54,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2018-11-18 15:12:54,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=6013, Unknown=0, NotChecked=0, Total=8930 [2018-11-18 15:12:54,489 INFO L87 Difference]: Start difference. First operand 193 states and 193 transitions. Second operand 95 states. [2018-11-18 15:12:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:12:55,362 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-11-18 15:12:55,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-11-18 15:12:55,362 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 192 [2018-11-18 15:12:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 15:12:55,363 INFO L225 Difference]: With dead ends: 196 [2018-11-18 15:12:55,363 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 15:12:55,364 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6614 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=6850, Invalid=17330, Unknown=0, NotChecked=0, Total=24180 [2018-11-18 15:12:55,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 15:12:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 15:12:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 15:12:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:12:55,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 192 [2018-11-18 15:12:55,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 15:12:55,365 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:12:55,365 INFO L481 AbstractCegarLoop]: Interpolant automaton has 95 states. [2018-11-18 15:12:55,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:12:55,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 15:12:55,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 15:12:55,795 WARN L180 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 158 [2018-11-18 15:12:55,799 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 15:12:55,799 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:12:55,799 INFO L425 ceAbstractionStarter]: For program point mlogErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2018-11-18 15:12:55,799 INFO L425 ceAbstractionStarter]: For program point mlogErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-11-18 15:12:55,799 INFO L425 ceAbstractionStarter]: For program point mlogFINAL(lines 3 16) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point mlogErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 10) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point L7-1(lines 7 12) no Hoare annotation was computed. [2018-11-18 15:12:55,800 INFO L425 ceAbstractionStarter]: For program point mlogEXIT(lines 3 16) no Hoare annotation was computed. [2018-11-18 15:12:55,804 INFO L421 ceAbstractionStarter]: At program point L7-3(lines 7 12) the Hoare annotation is: (let ((.cse1 (div mlog_~x 2)) (.cse0 (< 0 (+ mlog_~x 1))) (.cse2 (<= 0 mlog_~res~0))) (or (and (<= mlog_~res~0 22) .cse0 (<= .cse1 255) .cse2) (and (<= mlog_~res~0 19) .cse0 (<= .cse1 2047) .cse2) (and (<= .cse1 16777215) .cse0 (<= mlog_~res~0 6) .cse2) (< 2147483647 |mlog_#in~x|) (and (<= mlog_~x 2147483647) (<= mlog_~res~0 0) .cse2) (and (<= .cse1 7) .cse0 (<= mlog_~res~0 27) .cse2) (and .cse0 (<= mlog_~res~0 8) (<= .cse1 4194303) .cse2) (and (<= mlog_~res~0 18) .cse0 .cse2 (<= .cse1 4095)) (and .cse0 (<= mlog_~res~0 13) (<= .cse1 131071) .cse2) (and (<= mlog_~res~0 20) .cse0 .cse2 (<= .cse1 1023)) (and (<= mlog_~res~0 28) .cse0 (<= .cse1 3) .cse2) (and (<= mlog_~res~0 1) .cse0 (<= .cse1 536870911) .cse2) (and .cse0 (<= mlog_~res~0 26) (<= .cse1 15) .cse2) (and .cse0 (<= mlog_~res~0 15) (<= .cse1 32767) .cse2) (and .cse0 (<= mlog_~res~0 24) .cse2 (<= .cse1 63)) (and (<= .cse1 33554431) .cse0 (<= mlog_~res~0 5) .cse2) (and (<= mlog_~res~0 3) .cse0 (<= .cse1 134217727) .cse2) (and (<= .cse1 1048575) (<= mlog_~res~0 10) .cse0 .cse2) (and .cse0 (<= mlog_~res~0 11) (<= .cse1 524287) .cse2) (and .cse0 (<= .cse1 8388607) .cse2 (<= mlog_~res~0 7)) (and .cse0 (<= .cse1 2097151) .cse2 (<= mlog_~res~0 9)) (and .cse0 (<= .cse1 67108863) (<= mlog_~res~0 4) .cse2) (and (<= mlog_~res~0 23) .cse0 (<= .cse1 127) .cse2) (and (<= mlog_~res~0 21) (<= .cse1 511) .cse0 .cse2) (and (<= mlog_~res~0 16) .cse0 .cse2 (<= .cse1 16383)) (and (<= mlog_~res~0 2) .cse0 .cse2 (<= .cse1 268435455)) (and .cse0 .cse2 (<= mlog_~x 1)) (and (<= mlog_~res~0 25) .cse0 .cse2 (<= .cse1 31)) (and .cse0 (<= .cse1 8191) (<= mlog_~res~0 17) .cse2) (and (<= .cse1 1) (<= mlog_~res~0 29) .cse0 .cse2) (and (<= .cse1 65535) .cse0 .cse2 (<= mlog_~res~0 14)) (and (<= .cse1 262143) .cse0 (<= mlog_~res~0 12) .cse2))) [2018-11-18 15:12:55,804 INFO L425 ceAbstractionStarter]: For program point mlogErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 9) no Hoare annotation was computed. [2018-11-18 15:12:55,804 INFO L425 ceAbstractionStarter]: For program point L7-4(lines 7 12) no Hoare annotation was computed. [2018-11-18 15:12:55,805 INFO L428 ceAbstractionStarter]: At program point mlogENTRY(lines 3 16) the Hoare annotation is: true [2018-11-18 15:12:55,805 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 15:12:55,805 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 15:12:55,805 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 15:12:55,805 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 15:12:55,805 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 18 20) the Hoare annotation is: true [2018-11-18 15:12:55,805 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 18 20) no Hoare annotation was computed. [2018-11-18 15:12:55,805 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 18 20) no Hoare annotation was computed. [2018-11-18 15:12:55,805 INFO L421 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (<= |main_#t~nondet1| 2147483647) [2018-11-18 15:12:55,805 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-18 15:12:55,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 03:12:55 BoogieIcfgContainer [2018-11-18 15:12:55,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 15:12:55,821 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:12:55,821 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:12:55,821 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:12:55,821 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:12:32" (3/4) ... [2018-11-18 15:12:55,827 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 15:12:55,833 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 15:12:55,833 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure mlog [2018-11-18 15:12:55,834 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 15:12:55,837 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-11-18 15:12:55,837 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 15:12:55,837 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 15:12:55,857 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((res <= 22 && 0 < x + 1) && x / 2 <= 255) && 0 <= res) || (((res <= 19 && 0 < x + 1) && x / 2 <= 2047) && 0 <= res)) || (((x / 2 <= 16777215 && 0 < x + 1) && res <= 6) && 0 <= res)) || 2147483647 < \old(x)) || ((x <= 2147483647 && res <= 0) && 0 <= res)) || (((x / 2 <= 7 && 0 < x + 1) && res <= 27) && 0 <= res)) || (((0 < x + 1 && res <= 8) && x / 2 <= 4194303) && 0 <= res)) || (((res <= 18 && 0 < x + 1) && 0 <= res) && x / 2 <= 4095)) || (((0 < x + 1 && res <= 13) && x / 2 <= 131071) && 0 <= res)) || (((res <= 20 && 0 < x + 1) && 0 <= res) && x / 2 <= 1023)) || (((res <= 28 && 0 < x + 1) && x / 2 <= 3) && 0 <= res)) || (((res <= 1 && 0 < x + 1) && x / 2 <= 536870911) && 0 <= res)) || (((0 < x + 1 && res <= 26) && x / 2 <= 15) && 0 <= res)) || (((0 < x + 1 && res <= 15) && x / 2 <= 32767) && 0 <= res)) || (((0 < x + 1 && res <= 24) && 0 <= res) && x / 2 <= 63)) || (((x / 2 <= 33554431 && 0 < x + 1) && res <= 5) && 0 <= res)) || (((res <= 3 && 0 < x + 1) && x / 2 <= 134217727) && 0 <= res)) || (((x / 2 <= 1048575 && res <= 10) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && res <= 11) && x / 2 <= 524287) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8388607) && 0 <= res) && res <= 7)) || (((0 < x + 1 && x / 2 <= 2097151) && 0 <= res) && res <= 9)) || (((0 < x + 1 && x / 2 <= 67108863) && res <= 4) && 0 <= res)) || (((res <= 23 && 0 < x + 1) && x / 2 <= 127) && 0 <= res)) || (((res <= 21 && x / 2 <= 511) && 0 < x + 1) && 0 <= res)) || (((res <= 16 && 0 < x + 1) && 0 <= res) && x / 2 <= 16383)) || (((res <= 2 && 0 < x + 1) && 0 <= res) && x / 2 <= 268435455)) || ((0 < x + 1 && 0 <= res) && x <= 1)) || (((res <= 25 && 0 < x + 1) && 0 <= res) && x / 2 <= 31)) || (((0 < x + 1 && x / 2 <= 8191) && res <= 17) && 0 <= res)) || (((x / 2 <= 1 && res <= 29) && 0 < x + 1) && 0 <= res)) || (((x / 2 <= 65535 && 0 < x + 1) && 0 <= res) && res <= 14)) || (((x / 2 <= 262143 && 0 < x + 1) && res <= 12) && 0 <= res) [2018-11-18 15:12:55,865 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f04d6ba2-da03-433a-9816-753fa4f53b25/bin-2019/uautomizer/witness.graphml [2018-11-18 15:12:55,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:12:55,866 INFO L168 Benchmark]: Toolchain (without parser) took 23314.82 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 447.2 MB). Free memory was 959.2 MB in the beginning and 928.3 MB in the end (delta: 30.9 MB). Peak memory consumption was 478.2 MB. Max. memory is 11.5 GB. [2018-11-18 15:12:55,866 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:12:55,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.79 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:12:55,867 INFO L168 Benchmark]: Boogie Preprocessor took 23.45 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:12:55,867 INFO L168 Benchmark]: RCFGBuilder took 188.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-18 15:12:55,867 INFO L168 Benchmark]: TraceAbstraction took 22912.56 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 317.2 MB). Free memory was 1.1 GB in the beginning and 928.3 MB in the end (delta: 189.7 MB). Peak memory consumption was 506.9 MB. Max. memory is 11.5 GB. [2018-11-18 15:12:55,868 INFO L168 Benchmark]: Witness Printer took 44.45 ms. Allocated memory is still 1.5 GB. Free memory is still 928.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:12:55,869 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 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.79 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.45 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -174.9 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 22912.56 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 317.2 MB). Free memory was 1.1 GB in the beginning and 928.3 MB in the end (delta: 189.7 MB). Peak memory consumption was 506.9 MB. Max. memory is 11.5 GB. * Witness Printer took 44.45 ms. Allocated memory is still 1.5 GB. Free memory is still 928.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 10]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 9]: 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: 7]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((res <= 22 && 0 < x + 1) && x / 2 <= 255) && 0 <= res) || (((res <= 19 && 0 < x + 1) && x / 2 <= 2047) && 0 <= res)) || (((x / 2 <= 16777215 && 0 < x + 1) && res <= 6) && 0 <= res)) || 2147483647 < \old(x)) || ((x <= 2147483647 && res <= 0) && 0 <= res)) || (((x / 2 <= 7 && 0 < x + 1) && res <= 27) && 0 <= res)) || (((0 < x + 1 && res <= 8) && x / 2 <= 4194303) && 0 <= res)) || (((res <= 18 && 0 < x + 1) && 0 <= res) && x / 2 <= 4095)) || (((0 < x + 1 && res <= 13) && x / 2 <= 131071) && 0 <= res)) || (((res <= 20 && 0 < x + 1) && 0 <= res) && x / 2 <= 1023)) || (((res <= 28 && 0 < x + 1) && x / 2 <= 3) && 0 <= res)) || (((res <= 1 && 0 < x + 1) && x / 2 <= 536870911) && 0 <= res)) || (((0 < x + 1 && res <= 26) && x / 2 <= 15) && 0 <= res)) || (((0 < x + 1 && res <= 15) && x / 2 <= 32767) && 0 <= res)) || (((0 < x + 1 && res <= 24) && 0 <= res) && x / 2 <= 63)) || (((x / 2 <= 33554431 && 0 < x + 1) && res <= 5) && 0 <= res)) || (((res <= 3 && 0 < x + 1) && x / 2 <= 134217727) && 0 <= res)) || (((x / 2 <= 1048575 && res <= 10) && 0 < x + 1) && 0 <= res)) || (((0 < x + 1 && res <= 11) && x / 2 <= 524287) && 0 <= res)) || (((0 < x + 1 && x / 2 <= 8388607) && 0 <= res) && res <= 7)) || (((0 < x + 1 && x / 2 <= 2097151) && 0 <= res) && res <= 9)) || (((0 < x + 1 && x / 2 <= 67108863) && res <= 4) && 0 <= res)) || (((res <= 23 && 0 < x + 1) && x / 2 <= 127) && 0 <= res)) || (((res <= 21 && x / 2 <= 511) && 0 < x + 1) && 0 <= res)) || (((res <= 16 && 0 < x + 1) && 0 <= res) && x / 2 <= 16383)) || (((res <= 2 && 0 < x + 1) && 0 <= res) && x / 2 <= 268435455)) || ((0 < x + 1 && 0 <= res) && x <= 1)) || (((res <= 25 && 0 < x + 1) && 0 <= res) && x / 2 <= 31)) || (((0 < x + 1 && x / 2 <= 8191) && res <= 17) && 0 <= res)) || (((x / 2 <= 1 && res <= 29) && 0 < x + 1) && 0 <= res)) || (((x / 2 <= 65535 && 0 < x + 1) && 0 <= res) && res <= 14)) || (((x / 2 <= 262143 && 0 < x + 1) && res <= 12) && 0 <= res) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 4 error locations. SAFE Result, 22.8s OverallTime, 33 OverallIterations, 31 TraceHistogramMax, 7.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 454 SDtfs, 1971 SDslu, 7095 SDs, 0 SdLazy, 3465 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4521 GetRequests, 2963 SyntacticMatches, 0 SemanticMatches, 1558 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19664 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 33 MinimizatonAttempts, 31 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 38 NumberOfFragments, 528 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 183 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 6143 NumberOfCodeBlocks, 6143 NumberOfCodeBlocksAsserted, 292 NumberOfCheckSat, 6081 ConstructedInterpolants, 0 QuantifiedInterpolants, 2319413 SizeOfPredicates, 464 NumberOfNonLiveVariables, 6061 ConjunctsInSsa, 957 ConjunctsInUnsatCore, 62 InterpolantComputations, 4 PerfectInterpolantSequences, 2760/55830 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...