./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/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 9072a9376e1e28de1ef4dc11b7134f6f175023b7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:00:27,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:00:27,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:00:27,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:00:27,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:00:27,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:00:27,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:00:27,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:00:27,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:00:27,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:00:27,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:00:27,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:00:27,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:00:27,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:00:27,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:00:27,464 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:00:27,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:00:27,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:00:27,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:00:27,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:00:27,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:00:27,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:00:27,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:00:27,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:00:27,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:00:27,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:00:27,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:00:27,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:00:27,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:00:27,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:00:27,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:00:27,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:00:27,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:00:27,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:00:27,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:00:27,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:00:27,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:00:27,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:00:27,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:00:27,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:00:27,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:00:27,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2019-12-07 19:00:27,489 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:00:27,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:00:27,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 19:00:27,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 19:00:27,491 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 19:00:27,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:00:27,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 19:00:27,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:00:27,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:00:27,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:00:27,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:00:27,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 19:00:27,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:00:27,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:00:27,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:00:27,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:00:27,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:00:27,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:00:27,494 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 19:00:27,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:00:27,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:00:27,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:00:27,494 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/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/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 -> 9072a9376e1e28de1ef4dc11b7134f6f175023b7 [2019-12-07 19:00:27,599 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:00:27,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:00:27,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:00:27,610 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:00:27,610 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:00:27,611 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2019-12-07 19:00:27,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/data/61e6a3040/7150ab5939394c87bdb01c96941032ff/FLAGdacedd47a [2019-12-07 19:00:28,040 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:00:28,040 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/sv-benchmarks/c/termination-crafted/MutualRecursion_1b.c [2019-12-07 19:00:28,044 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/data/61e6a3040/7150ab5939394c87bdb01c96941032ff/FLAGdacedd47a [2019-12-07 19:00:28,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/data/61e6a3040/7150ab5939394c87bdb01c96941032ff [2019-12-07 19:00:28,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:00:28,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:00:28,055 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:00:28,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:00:28,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:00:28,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d852d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28, skipping insertion in model container [2019-12-07 19:00:28,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:00:28,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:00:28,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:00:28,204 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:00:28,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:00:28,223 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:00:28,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28 WrapperNode [2019-12-07 19:00:28,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:00:28,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:00:28,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:00:28,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:00:28,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:00:28,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:00:28,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:00:28,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:00:28,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... [2019-12-07 19:00:28,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:00:28,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:00:28,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:00:28,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:00:28,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/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 [2019-12-07 19:00:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-12-07 19:00:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-12-07 19:00:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure g [2019-12-07 19:00:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2019-12-07 19:00:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:00:28,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:00:28,412 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:00:28,413 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 19:00:28,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:00:28 BoogieIcfgContainer [2019-12-07 19:00:28,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:00:28,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:00:28,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:00:28,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:00:28,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:00:28" (1/3) ... [2019-12-07 19:00:28,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25797fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:00:28, skipping insertion in model container [2019-12-07 19:00:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:00:28" (2/3) ... [2019-12-07 19:00:28,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25797fdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:00:28, skipping insertion in model container [2019-12-07 19:00:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:00:28" (3/3) ... [2019-12-07 19:00:28,418 INFO L109 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1b.c [2019-12-07 19:00:28,425 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:00:28,429 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-12-07 19:00:28,436 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-12-07 19:00:28,452 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:00:28,452 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:00:28,452 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:00:28,452 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:00:28,452 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:00:28,452 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:00:28,452 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:00:28,453 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:00:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-12-07 19:00:28,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 19:00:28,469 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:28,469 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 19:00:28,470 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:28,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:28,473 INFO L82 PathProgramCache]: Analyzing trace with hash 68150020, now seen corresponding path program 1 times [2019-12-07 19:00:28,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:28,479 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723397404] [2019-12-07 19:00:28,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:00:28,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723397404] [2019-12-07 19:00:28,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:28,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 19:00:28,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036092003] [2019-12-07 19:00:28,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:00:28,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:28,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:00:28,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:00:28,599 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2019-12-07 19:00:28,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:28,670 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2019-12-07 19:00:28,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:00:28,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 19:00:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:28,679 INFO L225 Difference]: With dead ends: 64 [2019-12-07 19:00:28,679 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 19:00:28,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:00:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 19:00:28,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-12-07 19:00:28,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 19:00:28,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2019-12-07 19:00:28,713 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 5 [2019-12-07 19:00:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:28,713 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2019-12-07 19:00:28,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:00:28,714 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2019-12-07 19:00:28,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 19:00:28,714 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:28,714 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 19:00:28,714 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:28,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2112650676, now seen corresponding path program 1 times [2019-12-07 19:00:28,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:28,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787610659] [2019-12-07 19:00:28,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:00:28,726 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787610659] [2019-12-07 19:00:28,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:28,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:00:28,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379125646] [2019-12-07 19:00:28,728 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:00:28,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:28,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:00:28,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:00:28,728 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 3 states. [2019-12-07 19:00:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:28,743 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2019-12-07 19:00:28,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:00:28,743 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 19:00:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:28,744 INFO L225 Difference]: With dead ends: 52 [2019-12-07 19:00:28,744 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 19:00:28,745 INFO L630 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 [2019-12-07 19:00:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 19:00:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-12-07 19:00:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 19:00:28,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2019-12-07 19:00:28,752 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 6 [2019-12-07 19:00:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:28,752 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2019-12-07 19:00:28,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:00:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2019-12-07 19:00:28,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:00:28,753 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:28,753 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:28,753 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:28,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:28,754 INFO L82 PathProgramCache]: Analyzing trace with hash 803040358, now seen corresponding path program 1 times [2019-12-07 19:00:28,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:28,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125126646] [2019-12-07 19:00:28,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:00:28,810 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125126646] [2019-12-07 19:00:28,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:28,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 19:00:28,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054555482] [2019-12-07 19:00:28,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 19:00:28,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:28,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 19:00:28,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:00:28,812 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 9 states. [2019-12-07 19:00:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:28,931 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2019-12-07 19:00:28,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 19:00:28,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2019-12-07 19:00:28,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:28,932 INFO L225 Difference]: With dead ends: 66 [2019-12-07 19:00:28,932 INFO L226 Difference]: Without dead ends: 63 [2019-12-07 19:00:28,933 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-12-07 19:00:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-12-07 19:00:28,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2019-12-07 19:00:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-07 19:00:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2019-12-07 19:00:28,940 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 13 [2019-12-07 19:00:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:28,940 INFO L462 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2019-12-07 19:00:28,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 19:00:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2019-12-07 19:00:28,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-12-07 19:00:28,941 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:28,941 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:28,941 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:28,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:28,941 INFO L82 PathProgramCache]: Analyzing trace with hash -265858514, now seen corresponding path program 1 times [2019-12-07 19:00:28,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:28,942 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432947242] [2019-12-07 19:00:28,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 19:00:28,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432947242] [2019-12-07 19:00:28,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:28,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 19:00:28,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205891625] [2019-12-07 19:00:28,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 19:00:28,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:28,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 19:00:28,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:00:28,963 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand 3 states. [2019-12-07 19:00:28,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:28,970 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2019-12-07 19:00:28,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 19:00:28,970 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-12-07 19:00:28,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:28,971 INFO L225 Difference]: With dead ends: 61 [2019-12-07 19:00:28,971 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 19:00:28,972 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 19:00:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 19:00:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2019-12-07 19:00:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 19:00:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2019-12-07 19:00:28,978 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 17 [2019-12-07 19:00:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:28,979 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2019-12-07 19:00:28,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 19:00:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2019-12-07 19:00:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 19:00:28,979 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:28,979 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:28,980 INFO L410 AbstractCegarLoop]: === Iteration 5 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:28,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1650762684, now seen corresponding path program 1 times [2019-12-07 19:00:28,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:28,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447304139] [2019-12-07 19:00:28,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 19:00:29,019 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447304139] [2019-12-07 19:00:29,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:29,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:00:29,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016123921] [2019-12-07 19:00:29,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:00:29,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:29,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:00:29,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:00:29,021 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 5 states. [2019-12-07 19:00:29,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:29,054 INFO L93 Difference]: Finished difference Result 93 states and 122 transitions. [2019-12-07 19:00:29,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:00:29,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-12-07 19:00:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:29,056 INFO L225 Difference]: With dead ends: 93 [2019-12-07 19:00:29,056 INFO L226 Difference]: Without dead ends: 92 [2019-12-07 19:00:29,056 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:00:29,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-12-07 19:00:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 78. [2019-12-07 19:00:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 19:00:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2019-12-07 19:00:29,066 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 21 [2019-12-07 19:00:29,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:29,066 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2019-12-07 19:00:29,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:00:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2019-12-07 19:00:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 19:00:29,067 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:29,067 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:29,067 INFO L410 AbstractCegarLoop]: === Iteration 6 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:29,067 INFO L82 PathProgramCache]: Analyzing trace with hash 365964416, now seen corresponding path program 1 times [2019-12-07 19:00:29,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:29,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851220209] [2019-12-07 19:00:29,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 19:00:29,107 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851220209] [2019-12-07 19:00:29,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:29,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:00:29,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204707800] [2019-12-07 19:00:29,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:00:29,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:29,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:00:29,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 19:00:29,108 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 5 states. [2019-12-07 19:00:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:29,139 INFO L93 Difference]: Finished difference Result 93 states and 119 transitions. [2019-12-07 19:00:29,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:00:29,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-12-07 19:00:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:29,141 INFO L225 Difference]: With dead ends: 93 [2019-12-07 19:00:29,141 INFO L226 Difference]: Without dead ends: 89 [2019-12-07 19:00:29,141 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:00:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-12-07 19:00:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2019-12-07 19:00:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 19:00:29,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2019-12-07 19:00:29,151 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 22 [2019-12-07 19:00:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:29,152 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2019-12-07 19:00:29,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:00:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2019-12-07 19:00:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-12-07 19:00:29,153 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:29,153 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:29,153 INFO L410 AbstractCegarLoop]: === Iteration 7 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:29,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2082036524, now seen corresponding path program 1 times [2019-12-07 19:00:29,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:29,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218884574] [2019-12-07 19:00:29,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 19:00:29,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218884574] [2019-12-07 19:00:29,251 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205544797] [2019-12-07 19:00:29,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/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 [2019-12-07 19:00:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,276 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 19:00:29,280 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:00:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 19:00:29,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 19:00:29,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 14 [2019-12-07 19:00:29,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298863925] [2019-12-07 19:00:29,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 19:00:29,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:29,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 19:00:29,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2019-12-07 19:00:29,313 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 14 states. [2019-12-07 19:00:29,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:29,532 INFO L93 Difference]: Finished difference Result 198 states and 268 transitions. [2019-12-07 19:00:29,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 19:00:29,533 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2019-12-07 19:00:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:29,534 INFO L225 Difference]: With dead ends: 198 [2019-12-07 19:00:29,535 INFO L226 Difference]: Without dead ends: 127 [2019-12-07 19:00:29,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2019-12-07 19:00:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-12-07 19:00:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2019-12-07 19:00:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-12-07 19:00:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2019-12-07 19:00:29,549 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 32 [2019-12-07 19:00:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:29,549 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2019-12-07 19:00:29,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 19:00:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2019-12-07 19:00:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 19:00:29,550 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:29,550 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:29,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:00:29,752 INFO L410 AbstractCegarLoop]: === Iteration 8 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:29,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1488102097, now seen corresponding path program 1 times [2019-12-07 19:00:29,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:29,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605527661] [2019-12-07 19:00:29,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:29,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-12-07 19:00:29,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605527661] [2019-12-07 19:00:29,975 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464407016] [2019-12-07 19:00:29,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/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 [2019-12-07 19:00:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,020 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 19:00:30,021 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:00:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:00:30,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 19:00:30,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2019-12-07 19:00:30,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639057514] [2019-12-07 19:00:30,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 19:00:30,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 19:00:30,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:00:30,047 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand 5 states. [2019-12-07 19:00:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:30,089 INFO L93 Difference]: Finished difference Result 178 states and 234 transitions. [2019-12-07 19:00:30,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 19:00:30,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-12-07 19:00:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:30,091 INFO L225 Difference]: With dead ends: 178 [2019-12-07 19:00:30,091 INFO L226 Difference]: Without dead ends: 78 [2019-12-07 19:00:30,093 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-12-07 19:00:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-12-07 19:00:30,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-12-07 19:00:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-12-07 19:00:30,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2019-12-07 19:00:30,099 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 24 [2019-12-07 19:00:30,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:30,100 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2019-12-07 19:00:30,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 19:00:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2019-12-07 19:00:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-12-07 19:00:30,102 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:30,102 INFO L410 BasicCegarLoop]: trace histogram [8, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-12-07 19:00:30,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:00:30,304 INFO L410 AbstractCegarLoop]: === Iteration 9 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:30,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash 627143089, now seen corresponding path program 1 times [2019-12-07 19:00:30,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:30,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153195357] [2019-12-07 19:00:30,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,448 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2019-12-07 19:00:30,448 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153195357] [2019-12-07 19:00:30,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:30,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 19:00:30,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161779489] [2019-12-07 19:00:30,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:00:30,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:00:30,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:00:30,450 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand 8 states. [2019-12-07 19:00:30,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:30,491 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2019-12-07 19:00:30,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:00:30,491 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2019-12-07 19:00:30,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:30,493 INFO L225 Difference]: With dead ends: 78 [2019-12-07 19:00:30,493 INFO L226 Difference]: Without dead ends: 76 [2019-12-07 19:00:30,493 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 19:00:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-12-07 19:00:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-12-07 19:00:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-12-07 19:00:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2019-12-07 19:00:30,498 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 94 [2019-12-07 19:00:30,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:30,499 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2019-12-07 19:00:30,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:00:30,499 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2019-12-07 19:00:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-12-07 19:00:30,501 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:00:30,501 INFO L410 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:00:30,501 INFO L410 AbstractCegarLoop]: === Iteration 10 === [fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 19:00:30,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:00:30,502 INFO L82 PathProgramCache]: Analyzing trace with hash -319407487, now seen corresponding path program 1 times [2019-12-07 19:00:30,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 19:00:30,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419989508] [2019-12-07 19:00:30,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:00:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:00:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-12-07 19:00:30,578 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419989508] [2019-12-07 19:00:30,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:00:30,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 19:00:30,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465262354] [2019-12-07 19:00:30,579 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:00:30,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 19:00:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:00:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:00:30,580 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand 8 states. [2019-12-07 19:00:30,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:00:30,620 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2019-12-07 19:00:30,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:00:30,620 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2019-12-07 19:00:30,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:00:30,621 INFO L225 Difference]: With dead ends: 76 [2019-12-07 19:00:30,621 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:00:30,622 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-12-07 19:00:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:00:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:00:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:00:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:00:30,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2019-12-07 19:00:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:00:30,623 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:00:30,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:00:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:00:30,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:00:30,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:00:30,763 INFO L246 CegarLoopResult]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2019-12-07 19:00:30,763 INFO L242 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (or (and (<= 1 f_~x) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483645))) [2019-12-07 19:00:30,763 INFO L246 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L242 CegarLoopResult]: At program point L14-4(line 14) the Hoare annotation is: (or (and (<= 0 |f_#t~ret0|) (<= |f_#t~ret0| 0) (<= 1 f_~x) (= |f_#in~x| f_~x)) (not (<= |f_#in~x| 2147483645))) [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point L14-6(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point L14-7(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L249 CegarLoopResult]: At program point fENTRY(lines 11 15) the Hoare annotation is: true [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,764 INFO L246 CegarLoopResult]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L19(lines 19 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L242 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (and (or (= |g_#in~x| g_~x) (not (<= |g_#in~x| 2147483647))) (or (not (<= |g_#in~x| 2147483645)) (<= 1 g_~x))) [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-3(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-4(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-5(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L242 CegarLoopResult]: At program point L20-6(line 20) the Hoare annotation is: (or (and (<= 0 |g_#t~ret2|) (<= 1 g_~x) (<= |g_#t~ret2| 0) (= |g_#in~x| g_~x)) (not (<= |g_#in~x| 2147483647))) [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-7(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-8(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point L20-9(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,765 INFO L246 CegarLoopResult]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L249 CegarLoopResult]: At program point gENTRY(lines 17 21) the Hoare annotation is: true [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L242 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-12-07 19:00:30,766 INFO L246 CegarLoopResult]: For program point L24(lines 24 27) no Hoare annotation was computed. [2019-12-07 19:00:30,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:00:30 BoogieIcfgContainer [2019-12-07 19:00:30,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:00:30,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:00:30,770 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:00:30,771 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:00:30,771 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:00:28" (3/4) ... [2019-12-07 19:00:30,773 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:00:30,778 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2019-12-07 19:00:30,778 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2019-12-07 19:00:30,781 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 19:00:30,782 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 19:00:30,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eeb7f235-db88-43c1-9c1e-49d629438712/bin/uautomizer/witness.graphml [2019-12-07 19:00:30,813 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:00:30,814 INFO L168 Benchmark]: Toolchain (without parser) took 2759.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 218.6 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -233.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:00:30,815 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:00:30,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:00:30,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:00:30,815 INFO L168 Benchmark]: Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:00:30,816 INFO L168 Benchmark]: RCFGBuilder took 159.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:00:30,816 INFO L168 Benchmark]: TraceAbstraction took 2356.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -64.7 MB). Peak memory consumption was 310.9 MB. Max. memory is 11.5 GB. [2019-12-07 19:00:30,816 INFO L168 Benchmark]: Witness Printer took 42.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:00:30,818 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 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.68 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 159.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2356.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -64.7 MB). Peak memory consumption was 310.9 MB. Max. memory is 11.5 GB. * Witness Printer took 42.53 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB 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: - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 10 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 10, TraceHistogramMax: 8, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 307 SDtfs, 289 SDslu, 944 SDs, 0 SdLazy, 605 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 63 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 103 PreInvPairs, 115 NumberOfFragments, 70 HoareAnnotationTreeSize, 103 FomulaSimplifications, 52 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 148 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 347 ConstructedInterpolants, 0 QuantifiedInterpolants, 36147 SizeOfPredicates, 5 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 293/299 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 correct! Received shutdown request...