./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/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 a7af5709195f6c1eec73f2559f8e654af4840835 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 09:01:13,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:01:13,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:01:13,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:01:13,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:01:13,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:01:13,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:01:13,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:01:13,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:01:13,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:01:13,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:01:13,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:01:13,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:01:13,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:01:13,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:01:13,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:01:13,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:01:13,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:01:13,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:01:13,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:01:13,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:01:13,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:01:13,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:01:13,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:01:13,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:01:13,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:01:13,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:01:13,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:01:13,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:01:13,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:01:13,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:01:13,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:01:13,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:01:13,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:01:13,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:01:13,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:01:13,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:01:13,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:01:13,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:01:13,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:01:13,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:01:13,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-10-22 09:01:13,288 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:01:13,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:01:13,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:01:13,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:01:13,290 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:01:13,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:01:13,290 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:01:13,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:01:13,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:01:13,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:01:13,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:01:13,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:01:13,291 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-10-22 09:01:13,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:01:13,291 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:01:13,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:01:13,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:01:13,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:01:13,292 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:01:13,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:01:13,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:01:13,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:01:13,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:01:13,293 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:01:13,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:01:13,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:01:13,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:01:13,293 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/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 -> a7af5709195f6c1eec73f2559f8e654af4840835 [2019-10-22 09:01:13,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:01:13,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:01:13,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:01:13,327 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:01:13,327 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:01:13,328 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/../../sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2019-10-22 09:01:13,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/data/91160f175/cdca2b99a01c4e6c98d16dd0ab843c40/FLAG018652d20 [2019-10-22 09:01:13,770 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:01:13,771 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/sv-benchmarks/c/termination-numeric/MultCommutative-1.c [2019-10-22 09:01:13,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/data/91160f175/cdca2b99a01c4e6c98d16dd0ab843c40/FLAG018652d20 [2019-10-22 09:01:14,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/data/91160f175/cdca2b99a01c4e6c98d16dd0ab843c40 [2019-10-22 09:01:14,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:01:14,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:01:14,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:14,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:01:14,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:01:14,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c882b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14, skipping insertion in model container [2019-10-22 09:01:14,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,203 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:01:14,215 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:01:14,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:14,355 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:01:14,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:01:14,385 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:01:14,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14 WrapperNode [2019-10-22 09:01:14,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:01:14,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:14,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:01:14,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:01:14,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:01:14,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:01:14,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:01:14,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:01:14,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... [2019-10-22 09:01:14,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:01:14,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:01:14,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:01:14,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:01:14,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/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 [2019-10-22 09:01:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2019-10-22 09:01:14,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2019-10-22 09:01:14,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:01:14,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:01:14,778 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:01:14,779 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 09:01:14,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:14 BoogieIcfgContainer [2019-10-22 09:01:14,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:01:14,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:01:14,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:01:14,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:01:14,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:01:14" (1/3) ... [2019-10-22 09:01:14,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86ed9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:14, skipping insertion in model container [2019-10-22 09:01:14,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:01:14" (2/3) ... [2019-10-22 09:01:14,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e86ed9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:01:14, skipping insertion in model container [2019-10-22 09:01:14,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:14" (3/3) ... [2019-10-22 09:01:14,786 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-1.c [2019-10-22 09:01:14,791 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:01:14,796 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-10-22 09:01:14,805 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-10-22 09:01:14,826 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:01:14,826 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:01:14,826 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:01:14,826 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:01:14,826 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:01:14,827 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:01:14,827 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:01:14,827 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:01:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-22 09:01:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 09:01:14,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:14,850 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:14,852 INFO L410 AbstractCegarLoop]: === Iteration 1 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:14,857 INFO L82 PathProgramCache]: Analyzing trace with hash 887577448, now seen corresponding path program 1 times [2019-10-22 09:01:14,862 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:14,863 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681647214] [2019-10-22 09:01:14,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:14,863 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:14,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:14,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681647214] [2019-10-22 09:01:14,986 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:14,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:14,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687327083] [2019-10-22 09:01:14,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:14,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:15,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:15,022 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2019-10-22 09:01:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:15,287 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2019-10-22 09:01:15,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:15,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-10-22 09:01:15,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:15,297 INFO L225 Difference]: With dead ends: 80 [2019-10-22 09:01:15,297 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 09:01:15,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 09:01:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2019-10-22 09:01:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-22 09:01:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-10-22 09:01:15,335 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 7 [2019-10-22 09:01:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:15,336 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-10-22 09:01:15,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-10-22 09:01:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 09:01:15,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:15,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:15,337 INFO L410 AbstractCegarLoop]: === Iteration 2 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:15,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1745104164, now seen corresponding path program 1 times [2019-10-22 09:01:15,338 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:15,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972104861] [2019-10-22 09:01:15,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,338 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:15,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972104861] [2019-10-22 09:01:15,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:15,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:15,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898868042] [2019-10-22 09:01:15,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:15,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:15,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:15,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:15,372 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 5 states. [2019-10-22 09:01:15,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:15,447 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2019-10-22 09:01:15,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:15,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-10-22 09:01:15,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:15,449 INFO L225 Difference]: With dead ends: 58 [2019-10-22 09:01:15,449 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 09:01:15,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 09:01:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2019-10-22 09:01:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 09:01:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2019-10-22 09:01:15,459 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 8 [2019-10-22 09:01:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:15,459 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2019-10-22 09:01:15,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2019-10-22 09:01:15,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 09:01:15,460 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:15,460 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:15,460 INFO L410 AbstractCegarLoop]: === Iteration 3 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:15,461 INFO L82 PathProgramCache]: Analyzing trace with hash 80311672, now seen corresponding path program 1 times [2019-10-22 09:01:15,461 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:15,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271331266] [2019-10-22 09:01:15,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,461 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:15,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271331266] [2019-10-22 09:01:15,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:15,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:15,501 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044143175] [2019-10-22 09:01:15,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:15,501 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:15,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:15,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:15,502 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand 5 states. [2019-10-22 09:01:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:15,564 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2019-10-22 09:01:15,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:01:15,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 09:01:15,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:15,566 INFO L225 Difference]: With dead ends: 106 [2019-10-22 09:01:15,567 INFO L226 Difference]: Without dead ends: 64 [2019-10-22 09:01:15,567 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:01:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-10-22 09:01:15,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 55. [2019-10-22 09:01:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-10-22 09:01:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2019-10-22 09:01:15,576 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 13 [2019-10-22 09:01:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:15,577 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2019-10-22 09:01:15,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2019-10-22 09:01:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 09:01:15,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:15,577 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:15,578 INFO L410 AbstractCegarLoop]: === Iteration 4 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:15,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1248859076, now seen corresponding path program 1 times [2019-10-22 09:01:15,578 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:15,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824432553] [2019-10-22 09:01:15,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,579 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:15,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824432553] [2019-10-22 09:01:15,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:15,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:15,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249186240] [2019-10-22 09:01:15,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:15,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:15,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:15,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:15,617 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 5 states. [2019-10-22 09:01:15,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:15,669 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2019-10-22 09:01:15,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:15,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-22 09:01:15,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:15,673 INFO L225 Difference]: With dead ends: 81 [2019-10-22 09:01:15,673 INFO L226 Difference]: Without dead ends: 54 [2019-10-22 09:01:15,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:15,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-22 09:01:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2019-10-22 09:01:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 09:01:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2019-10-22 09:01:15,688 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 14 [2019-10-22 09:01:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:15,688 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2019-10-22 09:01:15,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:15,688 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2019-10-22 09:01:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 09:01:15,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:15,689 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:15,689 INFO L410 AbstractCegarLoop]: === Iteration 5 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:15,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:15,690 INFO L82 PathProgramCache]: Analyzing trace with hash 59932744, now seen corresponding path program 1 times [2019-10-22 09:01:15,690 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:15,690 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915042766] [2019-10-22 09:01:15,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:15,748 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915042766] [2019-10-22 09:01:15,748 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:01:15,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:01:15,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652511023] [2019-10-22 09:01:15,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:01:15,749 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:15,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:01:15,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:01:15,750 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand 5 states. [2019-10-22 09:01:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:15,790 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2019-10-22 09:01:15,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:01:15,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-22 09:01:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:15,791 INFO L225 Difference]: With dead ends: 57 [2019-10-22 09:01:15,791 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 09:01:15,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:01:15,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 09:01:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-10-22 09:01:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 09:01:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2019-10-22 09:01:15,800 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 15 [2019-10-22 09:01:15,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:15,800 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2019-10-22 09:01:15,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:01:15,800 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2019-10-22 09:01:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 09:01:15,801 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:15,801 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:15,801 INFO L410 AbstractCegarLoop]: === Iteration 6 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:15,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:15,801 INFO L82 PathProgramCache]: Analyzing trace with hash -65083495, now seen corresponding path program 1 times [2019-10-22 09:01:15,802 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:15,802 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970044835] [2019-10-22 09:01:15,802 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,802 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:15,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:15,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970044835] [2019-10-22 09:01:15,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335702431] [2019-10-22 09:01:15,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:15,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:15,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:15,946 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:15,946 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-10-22 09:01:15,946 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710639472] [2019-10-22 09:01:15,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:15,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:15,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:15,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:15,947 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2019-10-22 09:01:16,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:16,081 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2019-10-22 09:01:16,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 09:01:16,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-10-22 09:01:16,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:16,082 INFO L225 Difference]: With dead ends: 66 [2019-10-22 09:01:16,082 INFO L226 Difference]: Without dead ends: 65 [2019-10-22 09:01:16,082 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2019-10-22 09:01:16,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-10-22 09:01:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2019-10-22 09:01:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 09:01:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2019-10-22 09:01:16,099 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 17 [2019-10-22 09:01:16,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:16,099 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2019-10-22 09:01:16,099 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:16,099 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2019-10-22 09:01:16,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 09:01:16,100 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:16,100 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:16,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:16,304 INFO L410 AbstractCegarLoop]: === Iteration 7 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:16,304 INFO L82 PathProgramCache]: Analyzing trace with hash -2017588291, now seen corresponding path program 1 times [2019-10-22 09:01:16,305 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:16,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002104982] [2019-10-22 09:01:16,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:16,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:16,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:16,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002104982] [2019-10-22 09:01:16,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234689157] [2019-10-22 09:01:16,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:01:16,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:16,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 09:01:16,410 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:16,410 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 09:01:16,410 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75749893] [2019-10-22 09:01:16,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:16,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:16,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:16,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:16,411 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 8 states. [2019-10-22 09:01:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:16,498 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2019-10-22 09:01:16,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:01:16,498 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-10-22 09:01:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:16,499 INFO L225 Difference]: With dead ends: 60 [2019-10-22 09:01:16,499 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 09:01:16,500 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 09:01:16,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2019-10-22 09:01:16,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 09:01:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2019-10-22 09:01:16,517 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 18 [2019-10-22 09:01:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:16,518 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2019-10-22 09:01:16,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2019-10-22 09:01:16,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 09:01:16,519 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:16,519 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:16,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:16,722 INFO L410 AbstractCegarLoop]: === Iteration 8 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:16,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1437475595, now seen corresponding path program 1 times [2019-10-22 09:01:16,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:16,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709094585] [2019-10-22 09:01:16,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:16,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:16,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:16,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709094585] [2019-10-22 09:01:16,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624551720] [2019-10-22 09:01:16,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:16,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 09:01:16,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:16,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 09:01:16,897 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:16,897 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2019-10-22 09:01:16,897 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230702960] [2019-10-22 09:01:16,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 09:01:16,898 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:16,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 09:01:16,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:16,899 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 11 states. [2019-10-22 09:01:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:17,078 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2019-10-22 09:01:17,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 09:01:17,079 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2019-10-22 09:01:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:17,080 INFO L225 Difference]: With dead ends: 86 [2019-10-22 09:01:17,080 INFO L226 Difference]: Without dead ends: 85 [2019-10-22 09:01:17,081 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-10-22 09:01:17,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-10-22 09:01:17,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2019-10-22 09:01:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-10-22 09:01:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2019-10-22 09:01:17,093 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 24 [2019-10-22 09:01:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:17,093 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2019-10-22 09:01:17,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 09:01:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2019-10-22 09:01:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 09:01:17,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:17,095 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:17,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:17,296 INFO L410 AbstractCegarLoop]: === Iteration 9 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1612070431, now seen corresponding path program 1 times [2019-10-22 09:01:17,296 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:17,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649942566] [2019-10-22 09:01:17,296 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:17,297 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:17,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 09:01:17,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649942566] [2019-10-22 09:01:17,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632798597] [2019-10-22 09:01:17,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:17,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:01:17,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 09:01:17,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 09:01:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 09:01:17,403 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 09:01:17,403 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-10-22 09:01:17,403 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112702811] [2019-10-22 09:01:17,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:01:17,404 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:01:17,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:01:17,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:01:17,404 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand 8 states. [2019-10-22 09:01:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:01:17,468 INFO L93 Difference]: Finished difference Result 80 states and 91 transitions. [2019-10-22 09:01:17,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 09:01:17,468 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 09:01:17,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:01:17,469 INFO L225 Difference]: With dead ends: 80 [2019-10-22 09:01:17,469 INFO L226 Difference]: Without dead ends: 55 [2019-10-22 09:01:17,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:01:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-22 09:01:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2019-10-22 09:01:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-10-22 09:01:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2019-10-22 09:01:17,475 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 25 [2019-10-22 09:01:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:01:17,475 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2019-10-22 09:01:17,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:01:17,475 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2019-10-22 09:01:17,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-22 09:01:17,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:01:17,476 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 09:01:17,677 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 09:01:17,677 INFO L410 AbstractCegarLoop]: === Iteration 10 === [multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-10-22 09:01:17,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:01:17,678 INFO L82 PathProgramCache]: Analyzing trace with hash 935767789, now seen corresponding path program 1 times [2019-10-22 09:01:17,678 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:01:17,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658562247] [2019-10-22 09:01:17,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:17,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:01:17,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:01:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:01:17,730 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:01:17,731 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 09:01:17,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:01:17 BoogieIcfgContainer [2019-10-22 09:01:17,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:01:17,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:01:17,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:01:17,755 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:01:17,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:01:14" (3/4) ... [2019-10-22 09:01:17,757 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 09:01:17,792 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b1f51d4d-96d6-4666-9424-d3219cdd95c8/bin/uautomizer/witness.graphml [2019-10-22 09:01:17,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:01:17,794 INFO L168 Benchmark]: Toolchain (without parser) took 3607.96 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 962.8 MB in the end (delta: 251.8 MB). Peak memory consumption was 251.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,795 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:01:17,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.44 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.79 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: -59.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,796 INFO L168 Benchmark]: Boogie Preprocessor took 23.19 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,797 INFO L168 Benchmark]: RCFGBuilder took 247.74 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,797 INFO L168 Benchmark]: TraceAbstraction took 2973.98 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 965.4 MB in the end (delta: 268.9 MB). Peak memory consumption was 268.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,797 INFO L168 Benchmark]: Witness Printer took 37.59 ms. Allocated memory is still 1.3 GB. Free memory was 965.4 MB in the beginning and 962.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:01:17,800 INFO L335 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 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 197.44 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 122.79 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: -59.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.19 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 247.74 ms. Allocated memory is still 1.3 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2973.98 ms. Allocated memory is still 1.3 GB. Free memory was 1.2 GB in the beginning and 965.4 MB in the end (delta: 268.9 MB). Peak memory consumption was 268.9 MB. Max. memory is 11.5 GB. * Witness Printer took 37.59 ms. Allocated memory is still 1.3 GB. Free memory was 965.4 MB in the beginning and 962.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int m = __VERIFIER_nondet_int(); [L27] COND FALSE !(m < 0) [L30] int n = __VERIFIER_nondet_int(); [L31] COND FALSE !(n < 0) [L34] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L19] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L22] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L22] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L19] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L22] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L22] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L19] COND TRUE m == 0 [L20] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L22] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L22] EXPR n + mult(n, m - 1) [L22] return n + mult(n, m - 1); [L22] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L22] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 33 locations, 6 error locations. Result: UNSAFE, OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 240 SDslu, 558 SDs, 0 SdLazy, 487 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 10090 SizeOfPredicates, 5 NumberOfNonLiveVariables, 234 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 27/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...