./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2b89ce5b96ce55081609675201b2a9a116c2941a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:17:21,636 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:17:21,637 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:17:21,644 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:17:21,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:17:21,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:17:21,645 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:17:21,646 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:17:21,647 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:17:21,648 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:17:21,649 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:17:21,649 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:17:21,649 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:17:21,650 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:17:21,651 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:17:21,651 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:17:21,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:17:21,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:17:21,654 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:17:21,654 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:17:21,655 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:17:21,656 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:17:21,657 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:17:21,657 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:17:21,658 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:17:21,658 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:17:21,659 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:17:21,659 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:17:21,659 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:17:21,660 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:17:21,660 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:17:21,661 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:17:21,661 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:17:21,661 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:17:21,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:17:21,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:17:21,662 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 17:17:21,672 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:17:21,672 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:17:21,673 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:17:21,673 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 17:17:21,673 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:17:21,673 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:17:21,674 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 17:17:21,674 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:17:21,674 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:17:21,674 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:17:21,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:17:21,674 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 17:17:21,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 17:17:21,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:17:21,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:17:21,676 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:17:21,676 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:17:21,676 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:17:21,676 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:17:21,676 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 17:17:21,676 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 17:17:21,676 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:17:21,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:17:21,677 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_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b89ce5b96ce55081609675201b2a9a116c2941a [2018-11-18 17:17:21,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:17:21,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:17:21,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:17:21,712 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:17:21,712 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:17:21,713 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 17:17:21,753 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/data/735bd62c0/25b3cfc0e4a44abda9855c844161f634/FLAG4a41d491f [2018-11-18 17:17:22,143 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:17:22,144 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/sv-benchmarks/c/termination-crafted/Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 17:17:22,147 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/data/735bd62c0/25b3cfc0e4a44abda9855c844161f634/FLAG4a41d491f [2018-11-18 17:17:22,159 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/data/735bd62c0/25b3cfc0e4a44abda9855c844161f634 [2018-11-18 17:17:22,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:17:22,163 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 17:17:22,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:17:22,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:17:22,166 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:17:22,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da0b297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22, skipping insertion in model container [2018-11-18 17:17:22,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:17:22,188 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:17:22,291 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:17:22,293 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:17:22,302 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:17:22,309 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:17:22,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22 WrapperNode [2018-11-18 17:17:22,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:17:22,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:17:22,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:17:22,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:17:22,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... [2018-11-18 17:17:22,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:17:22,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:17:22,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:17:22,326 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:17:22,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:17:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:17:22,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:17:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 17:17:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:17:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:17:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:17:22,483 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:17:22,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:17:22 BoogieIcfgContainer [2018-11-18 17:17:22,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:17:22,484 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:17:22,484 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:17:22,486 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:17:22,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:17:22" (1/3) ... [2018-11-18 17:17:22,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fefcd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:17:22, skipping insertion in model container [2018-11-18 17:17:22,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:17:22" (2/3) ... [2018-11-18 17:17:22,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fefcd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:17:22, skipping insertion in model container [2018-11-18 17:17:22,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:17:22" (3/3) ... [2018-11-18 17:17:22,489 INFO L112 eAbstractionObserver]: Analyzing ICFG Benghazi_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 17:17:22,495 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:17:22,499 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 17:17:22,507 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 17:17:22,527 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:17:22,527 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:17:22,528 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 17:17:22,528 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:17:22,528 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:17:22,528 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:17:22,528 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:17:22,528 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:17:22,528 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:17:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-18 17:17:22,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 17:17:22,547 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:22,547 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:22,549 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:22,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash -895809593, now seen corresponding path program 1 times [2018-11-18 17:17:22,554 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:22,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:22,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:22,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:22,649 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 17:17:22,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:22,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:17:22,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:17:22,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:17:22,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:22,662 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-18 17:17:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:22,699 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-11-18 17:17:22,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:17:22,700 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-18 17:17:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:22,705 INFO L225 Difference]: With dead ends: 37 [2018-11-18 17:17:22,706 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 17:17:22,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 17:17:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-18 17:17:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 17:17:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 17:17:22,734 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-11-18 17:17:22,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:22,734 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 17:17:22,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:17:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 17:17:22,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 17:17:22,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:22,735 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:22,735 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:22,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2000293559, now seen corresponding path program 1 times [2018-11-18 17:17:22,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:22,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:22,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:22,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:22,774 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 17:17:22,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:22,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:17:22,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:17:22,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:17:22,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:17:22,776 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2018-11-18 17:17:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:22,816 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-18 17:17:22,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:17:22,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-18 17:17:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:22,818 INFO L225 Difference]: With dead ends: 28 [2018-11-18 17:17:22,818 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 17:17:22,819 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 17:17:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 17:17:22,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-11-18 17:17:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 17:17:22,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-18 17:17:22,822 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 9 [2018-11-18 17:17:22,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:22,822 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-18 17:17:22,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:17:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-18 17:17:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 17:17:22,822 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:22,822 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:22,823 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:22,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1879558135, now seen corresponding path program 1 times [2018-11-18 17:17:22,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:22,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:22,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:22,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:22,838 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 17:17:22,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:22,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:17:22,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:17:22,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:17:22,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:22,839 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 3 states. [2018-11-18 17:17:22,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:22,861 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-11-18 17:17:22,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:17:22,861 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 17:17:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:22,862 INFO L225 Difference]: With dead ends: 30 [2018-11-18 17:17:22,862 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 17:17:22,862 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:22,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 17:17:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2018-11-18 17:17:22,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 17:17:22,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-18 17:17:22,865 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 10 [2018-11-18 17:17:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:22,866 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-18 17:17:22,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:17:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-18 17:17:22,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:17:22,866 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:22,867 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:22,867 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:22,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:22,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1863240011, now seen corresponding path program 1 times [2018-11-18 17:17:22,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:22,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:22,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:22,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:22,882 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 17:17:22,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:22,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:17:22,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:17:22,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:17:22,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:22,883 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 3 states. [2018-11-18 17:17:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:22,898 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-18 17:17:22,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:17:22,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 17:17:22,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:22,899 INFO L225 Difference]: With dead ends: 30 [2018-11-18 17:17:22,899 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 17:17:22,899 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 17:17:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2018-11-18 17:17:22,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 17:17:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-18 17:17:22,902 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 11 [2018-11-18 17:17:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:22,902 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-18 17:17:22,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:17:22,902 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-18 17:17:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 17:17:22,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:22,903 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:22,903 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:22,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1925865547, now seen corresponding path program 1 times [2018-11-18 17:17:22,903 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:22,903 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:22,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:22,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:22,924 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 17:17:22,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:22,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:17:22,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:17:22,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:17:22,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:17:22,925 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2018-11-18 17:17:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:22,983 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-11-18 17:17:22,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:17:22,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-18 17:17:22,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:22,985 INFO L225 Difference]: With dead ends: 34 [2018-11-18 17:17:22,985 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 17:17:22,985 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 17:17:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 17:17:22,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2018-11-18 17:17:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 17:17:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-18 17:17:22,988 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2018-11-18 17:17:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:22,989 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-18 17:17:22,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:17:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-18 17:17:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 17:17:22,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:22,989 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:22,989 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:22,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:22,989 INFO L82 PathProgramCache]: Analyzing trace with hash -427710131, now seen corresponding path program 1 times [2018-11-18 17:17:22,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:22,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:22,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:22,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,016 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 17:17:23,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:23,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 17:17:23,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 17:17:23,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 17:17:23,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 17:17:23,017 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2018-11-18 17:17:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,043 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-18 17:17:23,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:17:23,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-11-18 17:17:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,044 INFO L225 Difference]: With dead ends: 34 [2018-11-18 17:17:23,044 INFO L226 Difference]: Without dead ends: 33 [2018-11-18 17:17:23,044 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 17:17:23,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-18 17:17:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2018-11-18 17:17:23,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 17:17:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-18 17:17:23,046 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 13 [2018-11-18 17:17:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,047 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-18 17:17:23,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 17:17:23,047 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-18 17:17:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 17:17:23,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,047 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,048 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1255492539, now seen corresponding path program 1 times [2018-11-18 17:17:23,048 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:23,088 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:23,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:23,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:23,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-18 17:17:23,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 17:17:23,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 17:17:23,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 17:17:23,164 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2018-11-18 17:17:23,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,236 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-18 17:17:23,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 17:17:23,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-18 17:17:23,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,237 INFO L225 Difference]: With dead ends: 37 [2018-11-18 17:17:23,238 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:17:23,238 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:17:23,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:17:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2018-11-18 17:17:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 17:17:23,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-18 17:17:23,241 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 16 [2018-11-18 17:17:23,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,242 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-18 17:17:23,242 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 17:17:23,242 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-18 17:17:23,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 17:17:23,242 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,242 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,243 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,243 INFO L82 PathProgramCache]: Analyzing trace with hash 265563093, now seen corresponding path program 1 times [2018-11-18 17:17:23,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,262 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:23,262 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:23,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 17:17:23,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-18 17:17:23,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 17:17:23,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 17:17:23,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:17:23,355 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 8 states. [2018-11-18 17:17:23,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,445 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-11-18 17:17:23,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 17:17:23,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-18 17:17:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,445 INFO L225 Difference]: With dead ends: 35 [2018-11-18 17:17:23,445 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 17:17:23,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:17:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 17:17:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-11-18 17:17:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-18 17:17:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-18 17:17:23,449 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 17 [2018-11-18 17:17:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,449 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-18 17:17:23,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 17:17:23,449 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-18 17:17:23,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 17:17:23,449 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,449 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,450 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,450 INFO L82 PathProgramCache]: Analyzing trace with hash -357478659, now seen corresponding path program 1 times [2018-11-18 17:17:23,450 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,450 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,475 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 17:17:23,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:23,476 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:23,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:23,491 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 17:17:23,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:23,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 17:17:23,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:17:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:17:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:17:23,511 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 5 states. [2018-11-18 17:17:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,549 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-11-18 17:17:23,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:17:23,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-18 17:17:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,550 INFO L225 Difference]: With dead ends: 37 [2018-11-18 17:17:23,550 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 17:17:23,550 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 17:17:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 17:17:23,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2018-11-18 17:17:23,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 17:17:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-18 17:17:23,552 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 18 [2018-11-18 17:17:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,553 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-18 17:17:23,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:17:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-18 17:17:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 17:17:23,553 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,553 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,554 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1803063511, now seen corresponding path program 1 times [2018-11-18 17:17:23,556 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:17:23,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 17:17:23,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 17:17:23,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 17:17:23,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:23,580 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 3 states. [2018-11-18 17:17:23,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,590 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-18 17:17:23,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 17:17:23,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-18 17:17:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,591 INFO L225 Difference]: With dead ends: 31 [2018-11-18 17:17:23,592 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 17:17:23,592 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 17:17:23,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 17:17:23,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 17:17:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 17:17:23,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-18 17:17:23,595 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 19 [2018-11-18 17:17:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,595 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-18 17:17:23,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 17:17:23,596 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-18 17:17:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 17:17:23,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,596 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,597 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,597 INFO L82 PathProgramCache]: Analyzing trace with hash 60394047, now seen corresponding path program 1 times [2018-11-18 17:17:23,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:23,633 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:23,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,653 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:23,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 17:17:23,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:17:23,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:17:23,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:17:23,672 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 5 states. [2018-11-18 17:17:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,709 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-11-18 17:17:23,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:17:23,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-11-18 17:17:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,710 INFO L225 Difference]: With dead ends: 39 [2018-11-18 17:17:23,710 INFO L226 Difference]: Without dead ends: 38 [2018-11-18 17:17:23,711 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 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 17:17:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-18 17:17:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2018-11-18 17:17:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 17:17:23,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-18 17:17:23,714 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2018-11-18 17:17:23,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,714 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-18 17:17:23,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:17:23,714 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-18 17:17:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 17:17:23,715 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,715 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,715 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1872215513, now seen corresponding path program 1 times [2018-11-18 17:17:23,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:23,749 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:23,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:23,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:23,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 6 [2018-11-18 17:17:23,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:17:23,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:17:23,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:17:23,792 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 7 states. [2018-11-18 17:17:23,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:23,870 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2018-11-18 17:17:23,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 17:17:23,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-11-18 17:17:23,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:23,871 INFO L225 Difference]: With dead ends: 43 [2018-11-18 17:17:23,871 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 17:17:23,871 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:17:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 17:17:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2018-11-18 17:17:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 17:17:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-18 17:17:23,874 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 21 [2018-11-18 17:17:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:23,874 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-18 17:17:23,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:17:23,874 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-18 17:17:23,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 17:17:23,875 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:23,875 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:23,875 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:23,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:23,876 INFO L82 PathProgramCache]: Analyzing trace with hash 727079855, now seen corresponding path program 2 times [2018-11-18 17:17:23,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:23,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:23,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:23,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:23,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:23,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:23,931 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:17:23,938 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:17:23,938 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:23,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:24,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2018-11-18 17:17:24,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 17:17:24,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 17:17:24,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:17:24,035 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 15 states. [2018-11-18 17:17:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:24,096 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-18 17:17:24,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:17:24,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2018-11-18 17:17:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:24,097 INFO L225 Difference]: With dead ends: 31 [2018-11-18 17:17:24,097 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 17:17:24,097 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-18 17:17:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 17:17:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 17:17:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 17:17:24,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-18 17:17:24,100 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 24 [2018-11-18 17:17:24,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:24,100 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-18 17:17:24,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 17:17:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-18 17:17:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 17:17:24,100 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:24,100 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:24,100 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:24,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:24,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1355927055, now seen corresponding path program 2 times [2018-11-18 17:17:24,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:24,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:24,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,101 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:24,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:24,136 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:24,142 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:17:24,148 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:17:24,148 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:24,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,170 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:24,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 17:17:24,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 17:17:24,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 17:17:24,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:17:24,170 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 6 states. [2018-11-18 17:17:24,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:24,218 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-11-18 17:17:24,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 17:17:24,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-11-18 17:17:24,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:24,220 INFO L225 Difference]: With dead ends: 41 [2018-11-18 17:17:24,220 INFO L226 Difference]: Without dead ends: 40 [2018-11-18 17:17:24,220 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-18 17:17:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-18 17:17:24,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2018-11-18 17:17:24,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 17:17:24,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-18 17:17:24,224 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 26 [2018-11-18 17:17:24,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:24,224 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-18 17:17:24,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 17:17:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-18 17:17:24,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-18 17:17:24,225 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:24,225 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:24,225 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:24,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:24,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1670807501, now seen corresponding path program 2 times [2018-11-18 17:17:24,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:24,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:24,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,227 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:24,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:24,261 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:24,270 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:17:24,277 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:17:24,278 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:24,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:24,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:24,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 17:17:24,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 17:17:24,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 17:17:24,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 17:17:24,298 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 7 states. [2018-11-18 17:17:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:24,350 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-18 17:17:24,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 17:17:24,351 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-11-18 17:17:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:24,351 INFO L225 Difference]: With dead ends: 44 [2018-11-18 17:17:24,351 INFO L226 Difference]: Without dead ends: 43 [2018-11-18 17:17:24,352 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:17:24,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-11-18 17:17:24,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2018-11-18 17:17:24,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 17:17:24,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-11-18 17:17:24,355 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 28 [2018-11-18 17:17:24,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:24,355 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-11-18 17:17:24,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 17:17:24,355 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-11-18 17:17:24,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 17:17:24,356 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:24,356 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:24,356 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:24,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:24,356 INFO L82 PathProgramCache]: Analyzing trace with hash -220012315, now seen corresponding path program 3 times [2018-11-18 17:17:24,357 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:24,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:24,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:24,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:24,400 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:24,400 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:24,406 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:17:24,417 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 17:17:24,418 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:24,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,486 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:24,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-18 17:17:24,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 17:17:24,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 17:17:24,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:17:24,487 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 15 states. [2018-11-18 17:17:24,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:24,676 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-11-18 17:17:24,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 17:17:24,677 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-11-18 17:17:24,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:24,677 INFO L225 Difference]: With dead ends: 49 [2018-11-18 17:17:24,677 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 17:17:24,678 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-11-18 17:17:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 17:17:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-18 17:17:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-18 17:17:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-11-18 17:17:24,681 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 34 [2018-11-18 17:17:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:24,681 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-11-18 17:17:24,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 17:17:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-18 17:17:24,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-18 17:17:24,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:24,682 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:24,682 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:24,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:24,682 INFO L82 PathProgramCache]: Analyzing trace with hash -978435545, now seen corresponding path program 3 times [2018-11-18 17:17:24,682 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:24,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:24,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,683 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:24,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:24,730 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:24,739 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:17:24,756 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 17:17:24,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:24,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:24,852 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:24,867 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:24,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-18 17:17:24,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 17:17:24,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 17:17:24,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:17:24,868 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 15 states. [2018-11-18 17:17:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:25,007 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2018-11-18 17:17:25,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 17:17:25,008 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2018-11-18 17:17:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:25,008 INFO L225 Difference]: With dead ends: 70 [2018-11-18 17:17:25,008 INFO L226 Difference]: Without dead ends: 68 [2018-11-18 17:17:25,009 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2018-11-18 17:17:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-18 17:17:25,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2018-11-18 17:17:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 17:17:25,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2018-11-18 17:17:25,012 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 36 [2018-11-18 17:17:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:25,012 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2018-11-18 17:17:25,012 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 17:17:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2018-11-18 17:17:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-18 17:17:25,013 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:25,013 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:25,013 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:25,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:25,013 INFO L82 PathProgramCache]: Analyzing trace with hash -909925683, now seen corresponding path program 4 times [2018-11-18 17:17:25,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:25,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:25,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,014 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:25,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,070 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:25,070 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:25,078 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 17:17:25,100 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 17:17:25,100 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:25,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,123 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:25,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 17:17:25,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 17:17:25,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 17:17:25,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-18 17:17:25,123 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 11 states. [2018-11-18 17:17:25,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:25,225 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-11-18 17:17:25,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 17:17:25,225 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2018-11-18 17:17:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:25,226 INFO L225 Difference]: With dead ends: 64 [2018-11-18 17:17:25,226 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 17:17:25,226 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2018-11-18 17:17:25,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 17:17:25,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2018-11-18 17:17:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-18 17:17:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2018-11-18 17:17:25,229 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 50 [2018-11-18 17:17:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:25,230 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2018-11-18 17:17:25,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 17:17:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2018-11-18 17:17:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-18 17:17:25,234 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:25,235 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:25,235 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:25,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:25,235 INFO L82 PathProgramCache]: Analyzing trace with hash 64468417, now seen corresponding path program 5 times [2018-11-18 17:17:25,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:25,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:25,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,236 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:25,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:25,291 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:25,297 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 17:17:25,308 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-11-18 17:17:25,308 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:25,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,338 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:25,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-18 17:17:25,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 17:17:25,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 17:17:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-18 17:17:25,339 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 12 states. [2018-11-18 17:17:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:25,439 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-11-18 17:17:25,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 17:17:25,439 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2018-11-18 17:17:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:25,439 INFO L225 Difference]: With dead ends: 73 [2018-11-18 17:17:25,439 INFO L226 Difference]: Without dead ends: 72 [2018-11-18 17:17:25,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2018-11-18 17:17:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-18 17:17:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2018-11-18 17:17:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-18 17:17:25,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2018-11-18 17:17:25,445 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 58 [2018-11-18 17:17:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:25,445 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2018-11-18 17:17:25,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 17:17:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2018-11-18 17:17:25,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 17:17:25,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:25,446 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:25,446 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:25,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:25,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1824608259, now seen corresponding path program 4 times [2018-11-18 17:17:25,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:25,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:25,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:25,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:25,508 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:25,519 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 17:17:25,533 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 17:17:25,534 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:25,535 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,557 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:25,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-18 17:17:25,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 17:17:25,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 17:17:25,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-18 17:17:25,558 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 13 states. [2018-11-18 17:17:25,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:25,699 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-11-18 17:17:25,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 17:17:25,699 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2018-11-18 17:17:25,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:25,700 INFO L225 Difference]: With dead ends: 76 [2018-11-18 17:17:25,700 INFO L226 Difference]: Without dead ends: 75 [2018-11-18 17:17:25,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2018-11-18 17:17:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-18 17:17:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 70. [2018-11-18 17:17:25,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 17:17:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2018-11-18 17:17:25,706 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 60 [2018-11-18 17:17:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:25,706 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2018-11-18 17:17:25,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 17:17:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2018-11-18 17:17:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 17:17:25,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:25,708 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:25,708 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:25,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:25,708 INFO L82 PathProgramCache]: Analyzing trace with hash 183735477, now seen corresponding path program 6 times [2018-11-18 17:17:25,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:25,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:25,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:25,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:25,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:25,864 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:25,873 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 17:17:25,890 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-18 17:17:25,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:25,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:26,243 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 12 proven. 191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:26,260 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:26,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 31 [2018-11-18 17:17:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-18 17:17:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-18 17:17:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2018-11-18 17:17:26,261 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 32 states. [2018-11-18 17:17:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:27,405 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2018-11-18 17:17:27,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-18 17:17:27,406 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 66 [2018-11-18 17:17:27,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:27,406 INFO L225 Difference]: With dead ends: 90 [2018-11-18 17:17:27,406 INFO L226 Difference]: Without dead ends: 89 [2018-11-18 17:17:27,407 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=605, Invalid=4225, Unknown=0, NotChecked=0, Total=4830 [2018-11-18 17:17:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-11-18 17:17:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2018-11-18 17:17:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-18 17:17:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2018-11-18 17:17:27,411 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 66 [2018-11-18 17:17:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:27,411 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2018-11-18 17:17:27,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-18 17:17:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2018-11-18 17:17:27,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-18 17:17:27,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:27,412 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:27,412 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:27,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:27,412 INFO L82 PathProgramCache]: Analyzing trace with hash 476135927, now seen corresponding path program 5 times [2018-11-18 17:17:27,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:27,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:27,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:27,413 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:27,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:27,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:27,487 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:27,493 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-18 17:17:27,505 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2018-11-18 17:17:27,505 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:27,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:27,513 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:27,528 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:27,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-18 17:17:27,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 17:17:27,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 17:17:27,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-18 17:17:27,529 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 14 states. [2018-11-18 17:17:27,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:27,662 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2018-11-18 17:17:27,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 17:17:27,664 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2018-11-18 17:17:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:27,664 INFO L225 Difference]: With dead ends: 92 [2018-11-18 17:17:27,665 INFO L226 Difference]: Without dead ends: 91 [2018-11-18 17:17:27,665 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2018-11-18 17:17:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-11-18 17:17:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2018-11-18 17:17:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-18 17:17:27,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2018-11-18 17:17:27,670 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 68 [2018-11-18 17:17:27,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:27,670 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2018-11-18 17:17:27,670 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 17:17:27,670 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2018-11-18 17:17:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-18 17:17:27,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:27,671 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:27,671 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:27,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:27,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1888173993, now seen corresponding path program 7 times [2018-11-18 17:17:27,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:27,672 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:27,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:27,672 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:27,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:27,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:27,757 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:27,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:27,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:27,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:27,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-18 17:17:27,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 17:17:27,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 17:17:27,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-18 17:17:27,803 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 15 states. [2018-11-18 17:17:27,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:27,941 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2018-11-18 17:17:27,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 17:17:27,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 74 [2018-11-18 17:17:27,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:27,942 INFO L225 Difference]: With dead ends: 97 [2018-11-18 17:17:27,943 INFO L226 Difference]: Without dead ends: 96 [2018-11-18 17:17:27,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2018-11-18 17:17:27,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-18 17:17:27,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2018-11-18 17:17:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-18 17:17:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2018-11-18 17:17:27,948 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 74 [2018-11-18 17:17:27,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:27,948 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2018-11-18 17:17:27,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 17:17:27,948 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2018-11-18 17:17:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-11-18 17:17:27,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:27,949 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:27,949 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:27,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:27,949 INFO L82 PathProgramCache]: Analyzing trace with hash 2059010027, now seen corresponding path program 6 times [2018-11-18 17:17:27,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:27,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:27,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:27,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:17:27,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:28,028 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:28,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:28,029 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:28,036 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-18 17:17:28,073 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2018-11-18 17:17:28,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:28,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 64 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:28,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:28,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 25] total 39 [2018-11-18 17:17:28,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-18 17:17:28,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-18 17:17:28,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1424, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 17:17:28,420 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 40 states. [2018-11-18 17:17:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:29,253 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2018-11-18 17:17:29,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-18 17:17:29,253 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 76 [2018-11-18 17:17:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:29,253 INFO L225 Difference]: With dead ends: 99 [2018-11-18 17:17:29,253 INFO L226 Difference]: Without dead ends: 98 [2018-11-18 17:17:29,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=788, Invalid=3372, Unknown=0, NotChecked=0, Total=4160 [2018-11-18 17:17:29,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-11-18 17:17:29,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2018-11-18 17:17:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-18 17:17:29,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-11-18 17:17:29,260 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 76 [2018-11-18 17:17:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:29,260 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-11-18 17:17:29,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-18 17:17:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-11-18 17:17:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-18 17:17:29,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:29,261 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:29,261 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:29,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:29,262 INFO L82 PathProgramCache]: Analyzing trace with hash 419297681, now seen corresponding path program 8 times [2018-11-18 17:17:29,262 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:29,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:29,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:29,267 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:29,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:29,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:29,397 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:29,409 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 17:17:29,422 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:17:29,422 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:29,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 0 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:29,451 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:29,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-18 17:17:29,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 17:17:29,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 17:17:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-18 17:17:29,452 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 18 states. [2018-11-18 17:17:29,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:17:29,674 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-11-18 17:17:29,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-18 17:17:29,674 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 90 [2018-11-18 17:17:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:17:29,674 INFO L225 Difference]: With dead ends: 111 [2018-11-18 17:17:29,674 INFO L226 Difference]: Without dead ends: 110 [2018-11-18 17:17:29,675 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2018-11-18 17:17:29,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-18 17:17:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2018-11-18 17:17:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-18 17:17:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2018-11-18 17:17:29,680 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 90 [2018-11-18 17:17:29,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:17:29,680 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2018-11-18 17:17:29,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 17:17:29,680 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2018-11-18 17:17:29,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-18 17:17:29,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:17:29,681 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-18 17:17:29,681 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 17:17:29,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:17:29,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2026890105, now seen corresponding path program 9 times [2018-11-18 17:17:29,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 17:17:29,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 17:17:29,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:29,682 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 17:17:29,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:17:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:17:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:17:29,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:17:29,800 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/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 17:17:29,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 17:17:29,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2018-11-18 17:17:29,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:17:29,819 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:17:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 318 proven. 138 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-18 17:17:35,670 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 17:17:35,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2018-11-18 17:17:35,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-18 17:17:35,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-18 17:17:35,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1414, Unknown=8, NotChecked=0, Total=1560 [2018-11-18 17:17:35,671 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 40 states. [2018-11-18 17:17:37,180 WARN L180 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 47 DAG size of output: 32 [2018-11-18 17:17:43,791 WARN L180 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2018-11-18 17:17:44,733 WARN L180 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2018-11-18 17:17:45,089 WARN L180 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2018-11-18 17:17:54,748 WARN L180 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2018-11-18 17:18:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:18:05,473 INFO L93 Difference]: Finished difference Result 126 states and 127 transitions. [2018-11-18 17:18:05,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-11-18 17:18:05,473 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 106 [2018-11-18 17:18:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:18:05,474 INFO L225 Difference]: With dead ends: 126 [2018-11-18 17:18:05,474 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:18:05,476 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2988 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=2189, Invalid=9555, Unknown=28, NotChecked=0, Total=11772 [2018-11-18 17:18:05,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:18:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:18:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:18:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:18:05,477 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2018-11-18 17:18:05,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:18:05,477 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:18:05,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-18 17:18:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:18:05,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:18:05,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 17:18:05,598 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 200 [2018-11-18 17:18:07,857 WARN L180 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 199 DAG size of output: 93 [2018-11-18 17:18:07,858 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 17:18:07,858 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:18:07,858 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 17:18:07,859 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 16 29) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 16 29) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 17:18:07,859 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 16 29) the Hoare annotation is: true [2018-11-18 17:18:07,859 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-18 17:18:07,860 INFO L425 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2018-11-18 17:18:07,860 INFO L425 ceAbstractionStarter]: For program point L26-1(line 26) no Hoare annotation was computed. [2018-11-18 17:18:07,860 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2018-11-18 17:18:07,860 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 27) the Hoare annotation is: (let ((.cse25 (+ main_~d2~0 main_~x~0)) (.cse22 (+ main_~d1old~0 main_~x~0))) (let ((.cse1 (<= 74 main_~d2~0)) (.cse0 (<= main_~d2~0 74)) (.cse18 (<= main_~d1~0 75)) (.cse20 (<= 75 main_~d1~0)) (.cse10 (<= main_~d1old~0 77)) (.cse14 (<= main_~d2~0 78)) (.cse15 (<= 77 main_~d1old~0)) (.cse11 (<= 78 main_~d2~0)) (.cse9 (<= 79 main_~d1~0)) (.cse3 (<= main_~d1old~0 79)) (.cse13 (<= main_~d1~0 79)) (.cse4 (<= main_~d2~0 80)) (.cse2 (<= 80 main_~d2~0)) (.cse12 (<= 0 .cse22)) (.cse5 (<= 79 main_~d1old~0)) (.cse7 (<= 81 main_~d1~0)) (.cse8 (<= .cse25 2147483192)) (.cse16 (<= main_~d1old~0 75)) (.cse17 (<= main_~d2~0 76)) (.cse23 (<= main_~d1~0 77)) (.cse6 (<= 1 .cse25)) (.cse19 (<= 76 main_~d2~0)) (.cse24 (<= 77 main_~d1~0)) (.cse21 (<= 75 main_~d1old~0))) (or (and (<= main_~d1~0 73) .cse0 (<= main_~x~0 (+ main_~d1~0 2147483574)) .cse1 (<= 73 main_~d1~0)) (and .cse2 .cse3 (<= main_~d1~0 81) .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse9 .cse10 (<= main_~x~0 2147483270) .cse11 .cse12 .cse13 .cse14 .cse15) (and .cse16 .cse17 (<= main_~x~0 2147483499) .cse18 .cse6 .cse19 .cse20 .cse21) (and (<= .cse22 2147483647) .cse1 (<= main_~d1old~0 73) .cse0 .cse18 (<= 73 main_~d1old~0) .cse6 .cse20) (and .cse23 .cse10 (<= main_~x~0 2147483347) .cse14 .cse6 .cse15 .cse24 .cse11) (and .cse2 .cse9 .cse3 .cse13 .cse4 (<= main_~x~0 2147483191) .cse5 .cse6) (and .cse2 .cse12 (<= (+ main_~x~0 main_~d1~0) 2147483112) (and (<= (+ main_~d2~0 main_~x~0 main_~d1~0) 2147483573) (<= (+ main_~d1old~0 main_~x~0 main_~d1~0) 2147483572)) .cse5 (<= .cse22 2147483191) (exists ((v_main_~x~0_36 Int)) (and (<= (+ main_~d2~0 (* 2 v_main_~x~0_36)) 6442450936) (<= (+ main_~d2~0 main_~x~0) (+ v_main_~x~0_36 1)))) (<= main_~d1old~0 2147483112) .cse6 .cse7 .cse8) (and .cse16 .cse17 .cse23 (<= .cse22 2147483499) .cse6 .cse19 .cse24 .cse21)))) [2018-11-18 17:18:07,860 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 22 27) no Hoare annotation was computed. [2018-11-18 17:18:07,860 INFO L425 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 26) no Hoare annotation was computed. [2018-11-18 17:18:07,865 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,866 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,871 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,871 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:18:07 BoogieIcfgContainer [2018-11-18 17:18:07,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:18:07,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:18:07,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:18:07,874 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:18:07,874 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:17:22" (3/4) ... [2018-11-18 17:18:07,877 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:18:07,881 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:18:07,882 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:18:07,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 17:18:07,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 17:18:07,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:18:07,884 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:18:07,901 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((d1 <= 73 && d2 <= 74) && x <= d1 + 2147483574) && 74 <= d2) && 73 <= d1) || (((((((80 <= d2 && d1\old <= 79) && d1 <= 81) && d2 <= 80) && 79 <= d1\old) && 1 <= d2 + x) && 81 <= d1) && d2 + x <= 2147483192)) || (((((((79 <= d1 && d1\old <= 77) && x <= 2147483270) && 78 <= d2) && 0 <= d1\old + x) && d1 <= 79) && d2 <= 78) && 77 <= d1\old)) || (((((((d1\old <= 75 && d2 <= 76) && x <= 2147483499) && d1 <= 75) && 1 <= d2 + x) && 76 <= d2) && 75 <= d1) && 75 <= d1\old)) || (((((((d1\old + x <= 2147483647 && 74 <= d2) && d1\old <= 73) && d2 <= 74) && d1 <= 75) && 73 <= d1\old) && 1 <= d2 + x) && 75 <= d1)) || (((((((d1 <= 77 && d1\old <= 77) && x <= 2147483347) && d2 <= 78) && 1 <= d2 + x) && 77 <= d1\old) && 77 <= d1) && 78 <= d2)) || (((((((80 <= d2 && 79 <= d1) && d1\old <= 79) && d1 <= 79) && d2 <= 80) && x <= 2147483191) && 79 <= d1\old) && 1 <= d2 + x)) || ((((((((((80 <= d2 && 0 <= d1\old + x) && x + d1 <= 2147483112) && d2 + x + d1 <= 2147483573 && d1\old + x + d1 <= 2147483572) && 79 <= d1\old) && d1\old + x <= 2147483191) && (\exists v_main_~x~0_36 : int :: d2 + 2 * v_main_~x~0_36 <= 6442450936 && d2 + x <= v_main_~x~0_36 + 1)) && d1\old <= 2147483112) && 1 <= d2 + x) && 81 <= d1) && d2 + x <= 2147483192)) || (((((((d1\old <= 75 && d2 <= 76) && d1 <= 77) && d1\old + x <= 2147483499) && 1 <= d2 + x) && 76 <= d2) && 77 <= d1) && 75 <= d1\old) [2018-11-18 17:18:07,909 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b50638ff-b5d4-460c-a2ae-ad07b61eb9c2/bin-2019/uautomizer/witness.graphml [2018-11-18 17:18:07,909 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:18:07,910 INFO L168 Benchmark]: Toolchain (without parser) took 45747.60 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 410.5 MB). Free memory was 959.2 MB in the beginning and 824.2 MB in the end (delta: 135.0 MB). Peak memory consumption was 545.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:18:07,910 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:18:07,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.41 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 17:18:07,911 INFO L168 Benchmark]: Boogie Preprocessor took 16.13 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 17:18:07,911 INFO L168 Benchmark]: RCFGBuilder took 156.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-11-18 17:18:07,911 INFO L168 Benchmark]: TraceAbstraction took 45389.50 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 264.8 MB). Free memory was 1.1 GB in the beginning and 824.2 MB in the end (delta: 307.8 MB). Peak memory consumption was 572.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:18:07,912 INFO L168 Benchmark]: Witness Printer took 35.44 ms. Allocated memory is still 1.4 GB. Free memory is still 824.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:18:07,914 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.41 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 16.13 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 156.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -186.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 45389.50 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 264.8 MB). Free memory was 1.1 GB in the beginning and 824.2 MB in the end (delta: 307.8 MB). Peak memory consumption was 572.5 MB. Max. memory is 11.5 GB. * Witness Printer took 35.44 ms. Allocated memory is still 1.4 GB. Free memory is still 824.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 26]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant [2018-11-18 17:18:07,917 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,917 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,918 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] [2018-11-18 17:18:07,919 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_36,QUANTIFIED] Derived loop invariant: (((((((((((d1 <= 73 && d2 <= 74) && x <= d1 + 2147483574) && 74 <= d2) && 73 <= d1) || (((((((80 <= d2 && d1\old <= 79) && d1 <= 81) && d2 <= 80) && 79 <= d1\old) && 1 <= d2 + x) && 81 <= d1) && d2 + x <= 2147483192)) || (((((((79 <= d1 && d1\old <= 77) && x <= 2147483270) && 78 <= d2) && 0 <= d1\old + x) && d1 <= 79) && d2 <= 78) && 77 <= d1\old)) || (((((((d1\old <= 75 && d2 <= 76) && x <= 2147483499) && d1 <= 75) && 1 <= d2 + x) && 76 <= d2) && 75 <= d1) && 75 <= d1\old)) || (((((((d1\old + x <= 2147483647 && 74 <= d2) && d1\old <= 73) && d2 <= 74) && d1 <= 75) && 73 <= d1\old) && 1 <= d2 + x) && 75 <= d1)) || (((((((d1 <= 77 && d1\old <= 77) && x <= 2147483347) && d2 <= 78) && 1 <= d2 + x) && 77 <= d1\old) && 77 <= d1) && 78 <= d2)) || (((((((80 <= d2 && 79 <= d1) && d1\old <= 79) && d1 <= 79) && d2 <= 80) && x <= 2147483191) && 79 <= d1\old) && 1 <= d2 + x)) || ((((((((((80 <= d2 && 0 <= d1\old + x) && x + d1 <= 2147483112) && d2 + x + d1 <= 2147483573 && d1\old + x + d1 <= 2147483572) && 79 <= d1\old) && d1\old + x <= 2147483191) && (\exists v_main_~x~0_36 : int :: d2 + 2 * v_main_~x~0_36 <= 6442450936 && d2 + x <= v_main_~x~0_36 + 1)) && d1\old <= 2147483112) && 1 <= d2 + x) && 81 <= d1) && d2 + x <= 2147483192)) || (((((((d1\old <= 75 && d2 <= 76) && d1 <= 77) && d1\old + x <= 2147483499) && 1 <= d2 + x) && 76 <= d2) && 77 <= d1) && 75 <= d1\old) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. SAFE Result, 45.3s OverallTime, 26 OverallIterations, 13 TraceHistogramMax, 33.6s AutomataDifference, 0.0s DeadEndRemovalTime, 2.3s HoareAnnotationTime, HoareTripleCheckerStatistics: 346 SDtfs, 1780 SDslu, 1710 SDs, 0 SdLazy, 3769 SolverSat, 918 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 8.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1337 GetRequests, 810 SyntacticMatches, 5 SemanticMatches, 522 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5615 ImplicationChecksByTransitivity, 32.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 26 MinimizatonAttempts, 119 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 19 NumberOfFragments, 285 HoareAnnotationTreeSize, 5 FomulaSimplifications, 5465 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 5 FomulaSimplificationsInter, 11882 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1858 NumberOfCodeBlocks, 1810 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 1813 ConstructedInterpolants, 35 QuantifiedInterpolants, 392986 SizeOfPredicates, 153 NumberOfNonLiveVariables, 1805 ConjunctsInSsa, 225 ConjunctsInUnsatCore, 45 InterpolantComputations, 8 PerfectInterpolantSequences, 546/5094 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...