./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted/MenloPark_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_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 7c87c9e4b733dad657e6ff9e27a5e9b26a2c3764 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:20:13,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:20:13,224 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:20:13,233 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:20:13,233 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:20:13,234 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:20:13,234 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:20:13,236 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:20:13,237 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:20:13,238 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:20:13,239 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:20:13,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:20:13,240 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:20:13,240 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:20:13,241 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:20:13,242 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:20:13,243 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:20:13,244 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:20:13,246 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:20:13,247 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:20:13,248 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:20:13,249 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:20:13,251 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:20:13,251 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:20:13,251 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:20:13,252 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:20:13,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:20:13,253 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:20:13,254 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:20:13,255 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:20:13,255 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:20:13,256 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:20:13,256 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:20:13,256 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:20:13,257 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:20:13,257 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:20:13,257 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-18 11:20:13,268 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:20:13,268 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:20:13,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:20:13,269 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 11:20:13,270 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 11:20:13,270 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 11:20:13,270 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 11:20:13,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:20:13,270 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:20:13,271 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:20:13,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:20:13,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:20:13,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:20:13,272 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:20:13,272 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:20:13,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:20:13,272 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:20:13,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:20:13,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:20:13,273 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 11:20:13,273 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:20:13,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:20:13,273 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_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 -> 7c87c9e4b733dad657e6ff9e27a5e9b26a2c3764 [2018-11-18 11:20:13,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:20:13,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:20:13,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:20:13,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:20:13,310 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:20:13,310 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 11:20:13,365 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/data/8b5b64ed2/9e558ed2adf644df8b5abaf145958d66/FLAGfa57b3aa8 [2018-11-18 11:20:13,777 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:20:13,778 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/sv-benchmarks/c/termination-crafted/MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 11:20:13,783 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/data/8b5b64ed2/9e558ed2adf644df8b5abaf145958d66/FLAGfa57b3aa8 [2018-11-18 11:20:14,179 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/data/8b5b64ed2/9e558ed2adf644df8b5abaf145958d66 [2018-11-18 11:20:14,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:20:14,183 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 11:20:14,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:20:14,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:20:14,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:20:14,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6578f1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14, skipping insertion in model container [2018-11-18 11:20:14,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:20:14,215 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:20:14,378 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:20:14,381 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:20:14,394 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:20:14,405 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:20:14,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14 WrapperNode [2018-11-18 11:20:14,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:20:14,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:20:14,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:20:14,407 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:20:14,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... [2018-11-18 11:20:14,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:20:14,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:20:14,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:20:14,440 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:20:14,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:20:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:20:14,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:20:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 11:20:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:20:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:20:14,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:20:14,814 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:20:14,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:20:14 BoogieIcfgContainer [2018-11-18 11:20:14,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:20:14,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:20:14,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:20:14,818 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:20:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:20:14" (1/3) ... [2018-11-18 11:20:14,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d7e95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:20:14, skipping insertion in model container [2018-11-18 11:20:14,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:20:14" (2/3) ... [2018-11-18 11:20:14,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d7e95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:20:14, skipping insertion in model container [2018-11-18 11:20:14,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:20:14" (3/3) ... [2018-11-18 11:20:14,822 INFO L112 eAbstractionObserver]: Analyzing ICFG MenloPark_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-18 11:20:14,830 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:20:14,835 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-18 11:20:14,847 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-18 11:20:14,870 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:20:14,870 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:20:14,871 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:20:14,871 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:20:14,871 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:20:14,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:20:14,871 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:20:14,871 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:20:14,871 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:20:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-18 11:20:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-18 11:20:14,890 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:14,891 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:14,892 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:14,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash -895809593, now seen corresponding path program 1 times [2018-11-18 11:20:14,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:14,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:14,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,029 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 11:20:15,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:20:15,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:20:15,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:20:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:20:15,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:20:15,044 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-11-18 11:20:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:15,140 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2018-11-18 11:20:15,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:20:15,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-18 11:20:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:15,151 INFO L225 Difference]: With dead ends: 37 [2018-11-18 11:20:15,151 INFO L226 Difference]: Without dead ends: 23 [2018-11-18 11:20:15,153 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 11:20:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-18 11:20:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2018-11-18 11:20:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 11:20:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 11:20:15,185 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-11-18 11:20:15,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:15,185 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 11:20:15,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:20:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 11:20:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:20:15,187 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:15,187 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:15,187 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:15,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:15,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2000293559, now seen corresponding path program 1 times [2018-11-18 11:20:15,188 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:15,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:15,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,249 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 11:20:15,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:20:15,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:20:15,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:20:15,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:20:15,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:20:15,252 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2018-11-18 11:20:15,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:15,323 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-18 11:20:15,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:20:15,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-18 11:20:15,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:15,324 INFO L225 Difference]: With dead ends: 28 [2018-11-18 11:20:15,324 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 11:20:15,325 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 11:20:15,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 11:20:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-11-18 11:20:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 11:20:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-18 11:20:15,328 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 9 [2018-11-18 11:20:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:15,329 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-18 11:20:15,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:20:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-18 11:20:15,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:20:15,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:15,330 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:15,330 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:15,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:15,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1879558135, now seen corresponding path program 1 times [2018-11-18 11:20:15,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:15,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:15,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:20:15,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:20:15,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:20:15,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:20:15,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:20:15,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:20:15,372 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 3 states. [2018-11-18 11:20:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:15,424 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2018-11-18 11:20:15,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:20:15,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:20:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:15,425 INFO L225 Difference]: With dead ends: 26 [2018-11-18 11:20:15,425 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 11:20:15,426 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 11:20:15,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 11:20:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-18 11:20:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 11:20:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-18 11:20:15,429 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 10 [2018-11-18 11:20:15,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:15,429 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-18 11:20:15,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:20:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-18 11:20:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:20:15,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:15,430 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:15,431 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:15,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1863240011, now seen corresponding path program 1 times [2018-11-18 11:20:15,431 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:15,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:15,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,466 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 11:20:15,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:20:15,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:20:15,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:20:15,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:20:15,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:20:15,467 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 3 states. [2018-11-18 11:20:15,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:15,535 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-18 11:20:15,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:20:15,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 11:20:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:15,536 INFO L225 Difference]: With dead ends: 26 [2018-11-18 11:20:15,536 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 11:20:15,536 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 11:20:15,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 11:20:15,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-18 11:20:15,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 11:20:15,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-18 11:20:15,539 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 11 [2018-11-18 11:20:15,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:15,539 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-18 11:20:15,540 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:20:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-18 11:20:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-18 11:20:15,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:15,540 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:15,540 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:15,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:15,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1925865547, now seen corresponding path program 1 times [2018-11-18 11:20:15,541 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:15,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:15,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,568 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 11:20:15,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:20:15,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:20:15,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:20:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:20:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:20:15,570 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 3 states. [2018-11-18 11:20:15,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:15,592 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-11-18 11:20:15,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:20:15,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-11-18 11:20:15,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:15,593 INFO L225 Difference]: With dead ends: 28 [2018-11-18 11:20:15,593 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 11:20:15,593 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 11:20:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 11:20:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-11-18 11:20:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-18 11:20:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-18 11:20:15,596 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2018-11-18 11:20:15,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:15,596 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-18 11:20:15,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:20:15,596 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-18 11:20:15,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 11:20:15,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:15,597 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:15,597 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:15,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:15,597 INFO L82 PathProgramCache]: Analyzing trace with hash -427710131, now seen corresponding path program 1 times [2018-11-18 11:20:15,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:15,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:15,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,620 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 11:20:15,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:20:15,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:20:15,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:20:15,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:20:15,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:20:15,621 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 3 states. [2018-11-18 11:20:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:15,655 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-18 11:20:15,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:20:15,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-18 11:20:15,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:15,656 INFO L225 Difference]: With dead ends: 28 [2018-11-18 11:20:15,656 INFO L226 Difference]: Without dead ends: 27 [2018-11-18 11:20:15,656 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 11:20:15,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-18 11:20:15,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-18 11:20:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 11:20:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-18 11:20:15,659 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 13 [2018-11-18 11:20:15,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:15,659 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-18 11:20:15,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:20:15,659 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-18 11:20:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 11:20:15,659 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:15,659 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:15,659 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:15,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:15,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1255492539, now seen corresponding path program 1 times [2018-11-18 11:20:15,660 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:15,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:15,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,706 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 11:20:15,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:15,706 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:15,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:15,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:15,859 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 11:20:15,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:15,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-18 11:20:15,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 11:20:15,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 11:20:15,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:20:15,885 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2018-11-18 11:20:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:16,020 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-18 11:20:16,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:20:16,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-11-18 11:20:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:16,021 INFO L225 Difference]: With dead ends: 37 [2018-11-18 11:20:16,021 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:20:16,022 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:20:16,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:20:16,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2018-11-18 11:20:16,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 11:20:16,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-18 11:20:16,025 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 16 [2018-11-18 11:20:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:16,025 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-18 11:20:16,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 11:20:16,025 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-18 11:20:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 11:20:16,026 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:16,026 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:16,026 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:16,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash 265563093, now seen corresponding path program 1 times [2018-11-18 11:20:16,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:16,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:16,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,191 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 11:20:16,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:16,191 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:16,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,216 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:16,280 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 11:20:16,296 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:16,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 11:20:16,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:20:16,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:20:16,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:20:16,297 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2018-11-18 11:20:16,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:16,377 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-18 11:20:16,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:20:16,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-18 11:20:16,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:16,378 INFO L225 Difference]: With dead ends: 36 [2018-11-18 11:20:16,378 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 11:20:16,379 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:20:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 11:20:16,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-18 11:20:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 11:20:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-18 11:20:16,381 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 17 [2018-11-18 11:20:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:16,381 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-18 11:20:16,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:20:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-18 11:20:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-18 11:20:16,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:16,383 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:16,383 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:16,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:16,383 INFO L82 PathProgramCache]: Analyzing trace with hash -357478659, now seen corresponding path program 1 times [2018-11-18 11:20:16,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:16,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:16,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,422 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 11:20:16,422 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:16,422 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:16,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:16,439 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 11:20:16,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:16,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 11:20:16,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:20:16,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:20:16,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:20:16,457 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 5 states. [2018-11-18 11:20:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:16,515 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-18 11:20:16,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:20:16,515 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-18 11:20:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:16,516 INFO L225 Difference]: With dead ends: 31 [2018-11-18 11:20:16,516 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 11:20:16,516 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:20:16,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 11:20:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 11:20:16,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 11:20:16,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-18 11:20:16,520 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 18 [2018-11-18 11:20:16,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:16,520 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-18 11:20:16,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:20:16,520 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-18 11:20:16,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 11:20:16,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:16,521 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:16,521 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:16,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:16,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1803063511, now seen corresponding path program 1 times [2018-11-18 11:20:16,521 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:16,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:16,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:20:16,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:16,569 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:16,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:20:16,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:16,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 11:20:16,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:20:16,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:20:16,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:20:16,622 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 5 states. [2018-11-18 11:20:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:16,772 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-18 11:20:16,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:20:16,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-18 11:20:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:16,773 INFO L225 Difference]: With dead ends: 43 [2018-11-18 11:20:16,773 INFO L226 Difference]: Without dead ends: 42 [2018-11-18 11:20:16,774 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:20:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-18 11:20:16,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2018-11-18 11:20:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 11:20:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-11-18 11:20:16,777 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 19 [2018-11-18 11:20:16,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:16,778 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-11-18 11:20:16,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:20:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-11-18 11:20:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 11:20:16,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:16,778 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:16,779 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:16,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:16,779 INFO L82 PathProgramCache]: Analyzing trace with hash 60394047, now seen corresponding path program 1 times [2018-11-18 11:20:16,779 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:16,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:16,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,814 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 11:20:16,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:16,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:16,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:16,832 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 11:20:16,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:16,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-18 11:20:16,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:20:16,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:20:16,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:20:16,858 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 4 states. [2018-11-18 11:20:16,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:16,876 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-11-18 11:20:16,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:20:16,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-18 11:20:16,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:16,878 INFO L225 Difference]: With dead ends: 38 [2018-11-18 11:20:16,878 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 11:20:16,878 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 11:20:16,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 11:20:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 11:20:16,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 11:20:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-11-18 11:20:16,882 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2018-11-18 11:20:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:16,886 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-11-18 11:20:16,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:20:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-11-18 11:20:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-18 11:20:16,887 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:16,887 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:16,887 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:16,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:16,887 INFO L82 PathProgramCache]: Analyzing trace with hash 727079855, now seen corresponding path program 2 times [2018-11-18 11:20:16,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:16,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:16,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:20:16,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:16,997 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 11:20:16,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:16,997 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:17,004 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:20:17,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:20:17,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:20:17,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:17,125 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 11:20:17,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:17,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2018-11-18 11:20:17,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 11:20:17,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 11:20:17,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:20:17,150 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 14 states. [2018-11-18 11:20:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:17,361 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2018-11-18 11:20:17,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 11:20:17,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2018-11-18 11:20:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:17,363 INFO L225 Difference]: With dead ends: 64 [2018-11-18 11:20:17,363 INFO L226 Difference]: Without dead ends: 63 [2018-11-18 11:20:17,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2018-11-18 11:20:17,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-18 11:20:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2018-11-18 11:20:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 11:20:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2018-11-18 11:20:17,366 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 24 [2018-11-18 11:20:17,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:17,367 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2018-11-18 11:20:17,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 11:20:17,367 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2018-11-18 11:20:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 11:20:17,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:17,368 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:17,368 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:17,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:17,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1064639073, now seen corresponding path program 2 times [2018-11-18 11:20:17,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:17,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:17,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:17,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:20:17,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:20:17,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:17,407 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:17,415 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:20:17,430 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:20:17,430 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:20:17,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:20:17,480 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:17,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 11:20:17,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 11:20:17,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 11:20:17,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:20:17,481 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 7 states. [2018-11-18 11:20:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:17,510 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2018-11-18 11:20:17,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:20:17,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-11-18 11:20:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:17,511 INFO L225 Difference]: With dead ends: 59 [2018-11-18 11:20:17,511 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 11:20:17,512 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:20:17,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 11:20:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-11-18 11:20:17,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-11-18 11:20:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2018-11-18 11:20:17,515 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 25 [2018-11-18 11:20:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:17,516 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2018-11-18 11:20:17,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 11:20:17,516 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2018-11-18 11:20:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-18 11:20:17,516 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:17,516 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:17,517 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:17,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:17,517 INFO L82 PathProgramCache]: Analyzing trace with hash 915934307, now seen corresponding path program 2 times [2018-11-18 11:20:17,517 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:17,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:17,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:17,518 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:20:17,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-18 11:20:17,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:17,544 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:17,552 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:20:17,560 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:20:17,560 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:20:17,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:20:17,638 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:17,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 9 [2018-11-18 11:20:17,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 11:20:17,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 11:20:17,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:20:17,639 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 10 states. [2018-11-18 11:20:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:17,687 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2018-11-18 11:20:17,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:20:17,688 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2018-11-18 11:20:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:17,689 INFO L225 Difference]: With dead ends: 58 [2018-11-18 11:20:17,689 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 11:20:17,689 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2018-11-18 11:20:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 11:20:17,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2018-11-18 11:20:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 11:20:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-11-18 11:20:17,694 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 27 [2018-11-18 11:20:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:17,694 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-11-18 11:20:17,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 11:20:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-11-18 11:20:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 11:20:17,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:20:17,695 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-18 11:20:17,695 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:20:17,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:20:17,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1661621131, now seen corresponding path program 3 times [2018-11-18 11:20:17,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 11:20:17,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 11:20:17,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:17,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:20:17,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:20:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:20:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 11:20:17,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:20:17,818 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/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 11:20:17,823 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:20:17,839 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 11:20:17,839 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:20:17,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:20:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-18 11:20:17,945 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:20:17,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2018-11-18 11:20:17,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 11:20:17,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 11:20:17,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:20:17,946 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 16 states. [2018-11-18 11:20:18,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:20:18,214 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-11-18 11:20:18,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:20:18,214 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 48 [2018-11-18 11:20:18,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:20:18,215 INFO L225 Difference]: With dead ends: 49 [2018-11-18 11:20:18,215 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:20:18,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:20:18,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:20:18,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:20:18,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:20:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:20:18,216 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-11-18 11:20:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:20:18,216 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:20:18,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 11:20:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:20:18,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:20:18,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:20:18,293 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:20:18,293 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:20:18,293 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:20:18,293 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:20:18,293 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:20:18,293 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:20:18,294 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 11:20:18,294 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-18 11:20:18,294 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 16 28) no Hoare annotation was computed. [2018-11-18 11:20:18,294 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-18 11:20:18,294 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-18 11:20:18,294 INFO L425 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 16 28) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 16 28) the Hoare annotation is: true [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 26) the Hoare annotation is: (or (and (<= main_~y~0 (+ main_~z~0 99)) (<= main_~x~0 2147483647) (<= main_~z~0 1) (<= 100 main_~y~0)) (let ((.cse0 (+ main_~z~0 100))) (and (<= .cse0 main_~y~0) (<= main_~y~0 100) (<= main_~x~0 (+ main_~y~0 2147483448)) (<= 99 main_~y~0) (<= main_~y~0 .cse0)))) [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point L22-4(lines 22 26) no Hoare annotation was computed. [2018-11-18 11:20:18,295 INFO L425 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2018-11-18 11:20:18,296 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 24) no Hoare annotation was computed. [2018-11-18 11:20:18,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:20:18 BoogieIcfgContainer [2018-11-18 11:20:18,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:20:18,306 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:20:18,306 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:20:18,306 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:20:18,307 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:20:14" (3/4) ... [2018-11-18 11:20:18,309 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:20:18,313 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:20:18,313 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:20:18,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 11:20:18,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 11:20:18,316 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:20:18,342 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e5f0440a-3ab8-441a-bc09-ee9bd3ccc8b0/bin-2019/uautomizer/witness.graphml [2018-11-18 11:20:18,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:20:18,343 INFO L168 Benchmark]: Toolchain (without parser) took 4160.50 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 232.8 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -151.6 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:20:18,344 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:20:18,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.21 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:20:18,345 INFO L168 Benchmark]: Boogie Preprocessor took 32.93 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:20:18,345 INFO L168 Benchmark]: RCFGBuilder took 375.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:20:18,345 INFO L168 Benchmark]: TraceAbstraction took 3490.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 46.1 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 54.0 MB). Peak memory consumption was 100.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:20:18,346 INFO L168 Benchmark]: Witness Printer took 36.49 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:20:18,347 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 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 222.21 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 32.93 ms. Allocated memory is still 1.0 GB. Free memory was 949.1 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 375.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -219.0 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3490.35 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 46.1 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 54.0 MB). Peak memory consumption was 100.1 MB. Max. memory is 11.5 GB. * Witness Printer took 36.49 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 24]: 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: 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((y <= z + 99 && x <= 2147483647) && z <= 1) && 100 <= y) || ((((z + 100 <= y && y <= 100) && x <= y + 2147483448) && 99 <= y) && y <= z + 100) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 6 error locations. SAFE Result, 3.4s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 174 SDtfs, 206 SDslu, 324 SDs, 0 SdLazy, 579 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=12, 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, 15 MinimizatonAttempts, 33 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 42 HoareAnnotationTreeSize, 5 FomulaSimplifications, 213 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 110 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 467 ConstructedInterpolants, 0 QuantifiedInterpolants, 55103 SizeOfPredicates, 7 NumberOfNonLiveVariables, 437 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 71/340 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...