./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 043660dc5a969bbd34b12cbb93ba3e467b4f8613 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:45:40,415 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:45:40,417 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:45:40,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:45:40,427 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:45:40,428 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:45:40,430 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:45:40,434 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:45:40,435 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:45:40,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:45:40,437 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:45:40,437 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:45:40,438 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:45:40,439 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:45:40,439 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:45:40,440 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:45:40,441 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:45:40,443 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:45:40,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:45:40,446 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:45:40,447 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:45:40,448 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:45:40,450 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:45:40,450 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:45:40,451 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:45:40,451 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:45:40,452 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:45:40,453 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:45:40,454 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:45:40,455 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:45:40,455 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:45:40,456 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:45:40,456 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:45:40,456 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:45:40,457 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:45:40,458 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:45:40,458 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 13:45:40,470 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:45:40,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:45:40,471 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:45:40,471 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 13:45:40,471 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:45:40,471 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:45:40,471 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:45:40,472 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:45:40,472 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:45:40,472 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:45:40,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:45:40,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:45:40,472 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:45:40,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:45:40,473 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:45:40,473 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:45:40,473 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:45:40,473 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:45:40,473 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:45:40,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:45:40,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:45:40,474 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:45:40,474 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:45:40,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:45:40,474 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:45:40,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:45:40,474 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:45:40,474 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:45:40,475 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:45:40,475 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:45:40,475 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 043660dc5a969bbd34b12cbb93ba3e467b4f8613 [2018-11-18 13:45:40,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:45:40,512 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:45:40,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:45:40,516 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:45:40,517 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:45:40,517 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c [2018-11-18 13:45:40,572 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/data/d20e350da/0aeae8194439478098fd2774447785e4/FLAG744975066 [2018-11-18 13:45:40,952 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:45:40,952 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/sv-benchmarks/c/ldv-regression/test24_true-unreach-call_true-termination.c [2018-11-18 13:45:40,957 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/data/d20e350da/0aeae8194439478098fd2774447785e4/FLAG744975066 [2018-11-18 13:45:40,969 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/data/d20e350da/0aeae8194439478098fd2774447785e4 [2018-11-18 13:45:40,972 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:45:40,975 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 13:45:40,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:45:40,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:45:40,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:45:40,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:45:40" (1/1) ... [2018-11-18 13:45:40,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66620e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:40, skipping insertion in model container [2018-11-18 13:45:40,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:45:40" (1/1) ... [2018-11-18 13:45:40,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:45:41,005 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:45:41,163 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:45:41,170 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:45:41,187 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:45:41,199 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:45:41,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41 WrapperNode [2018-11-18 13:45:41,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:45:41,200 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:45:41,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:45:41,200 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:45:41,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... [2018-11-18 13:45:41,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:45:41,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:45:41,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:45:41,240 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:45:41,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:45:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:45:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:45:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2018-11-18 13:45:41,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure check [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:45:41,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:45:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:45:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:45:41,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 13:45:41,593 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:45:41,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:45:41 BoogieIcfgContainer [2018-11-18 13:45:41,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:45:41,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:45:41,595 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:45:41,598 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:45:41,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:45:40" (1/3) ... [2018-11-18 13:45:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c73793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:45:41, skipping insertion in model container [2018-11-18 13:45:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:45:41" (2/3) ... [2018-11-18 13:45:41,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c73793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:45:41, skipping insertion in model container [2018-11-18 13:45:41,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:45:41" (3/3) ... [2018-11-18 13:45:41,601 INFO L112 eAbstractionObserver]: Analyzing ICFG test24_true-unreach-call_true-termination.c [2018-11-18 13:45:41,612 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:45:41,617 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:45:41,632 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:45:41,660 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:45:41,661 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:45:41,661 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:45:41,661 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:45:41,662 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:45:41,662 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:45:41,662 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:45:41,662 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:45:41,662 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:45:41,679 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-18 13:45:41,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 13:45:41,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:41,686 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:45:41,688 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:41,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1645541931, now seen corresponding path program 1 times [2018-11-18 13:45:41,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:41,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:41,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:41,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:41,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:41,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:45:41,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:45:41,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:45:41,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:45:41,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:45:41,851 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-18 13:45:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:41,869 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2018-11-18 13:45:41,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:45:41,870 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-11-18 13:45:41,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:41,879 INFO L225 Difference]: With dead ends: 36 [2018-11-18 13:45:41,880 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 13:45:41,883 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:45:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 13:45:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 13:45:41,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 13:45:41,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 13:45:41,915 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-18 13:45:41,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:41,916 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 13:45:41,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:45:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 13:45:41,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 13:45:41,917 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:41,917 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:45:41,917 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:41,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:41,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1286468379, now seen corresponding path program 1 times [2018-11-18 13:45:41,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:41,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:41,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:41,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:41,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:42,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:45:42,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:45:42,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 13:45:42,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:45:42,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:45:42,041 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 4 states. [2018-11-18 13:45:42,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:42,103 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-11-18 13:45:42,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:45:42,106 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-18 13:45:42,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:42,107 INFO L225 Difference]: With dead ends: 29 [2018-11-18 13:45:42,107 INFO L226 Difference]: Without dead ends: 21 [2018-11-18 13:45:42,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:45:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-18 13:45:42,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 13:45:42,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 13:45:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-18 13:45:42,111 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-11-18 13:45:42,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:42,112 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-18 13:45:42,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 13:45:42,112 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-18 13:45:42,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 13:45:42,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:42,113 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:45:42,113 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:42,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:42,113 INFO L82 PathProgramCache]: Analyzing trace with hash -438030602, now seen corresponding path program 1 times [2018-11-18 13:45:42,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:42,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:42,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:42,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:42,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:42,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:42,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:42,281 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:45:42,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:42,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:42,468 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-18 13:45:42,483 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 13:45:42,484 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:45:42,502 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:42,505 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:42,506 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-18 13:45:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:42,541 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:45:42,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 13:45:42,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 13:45:42,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 13:45:42,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:45:42,542 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2018-11-18 13:45:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:42,667 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-11-18 13:45:42,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:45:42,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-18 13:45:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:42,669 INFO L225 Difference]: With dead ends: 38 [2018-11-18 13:45:42,669 INFO L226 Difference]: Without dead ends: 30 [2018-11-18 13:45:42,670 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2018-11-18 13:45:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-18 13:45:42,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-18 13:45:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 13:45:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-18 13:45:42,675 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 20 [2018-11-18 13:45:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:42,675 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-18 13:45:42,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 13:45:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-18 13:45:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-18 13:45:42,676 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:42,676 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:45:42,677 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:42,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1223047003, now seen corresponding path program 2 times [2018-11-18 13:45:42,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:42,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:42,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:42,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:45:42,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:43,004 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:43,004 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:45:43,022 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:45:43,042 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:45:43,042 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:45:43,044 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:43,055 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:45:43,057 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:45:43,057 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:45:43,066 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:43,078 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:43,078 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:9 [2018-11-18 13:45:43,179 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-18 13:45:43,183 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-18 13:45:43,184 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:45:43,185 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:43,199 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:43,199 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-18 13:45:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:45:43,245 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:45:43,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-11-18 13:45:43,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-18 13:45:43,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-18 13:45:43,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:45:43,246 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 14 states. [2018-11-18 13:45:43,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:43,732 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2018-11-18 13:45:43,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 13:45:43,734 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2018-11-18 13:45:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:43,735 INFO L225 Difference]: With dead ends: 56 [2018-11-18 13:45:43,735 INFO L226 Difference]: Without dead ends: 48 [2018-11-18 13:45:43,736 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=206, Invalid=346, Unknown=0, NotChecked=0, Total=552 [2018-11-18 13:45:43,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-18 13:45:43,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 13:45:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 13:45:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-11-18 13:45:43,743 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 29 [2018-11-18 13:45:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:43,743 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-11-18 13:45:43,743 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-18 13:45:43,743 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-11-18 13:45:43,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-18 13:45:43,744 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:45:43,745 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:45:43,745 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:45:43,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:45:43,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1301321285, now seen corresponding path program 3 times [2018-11-18 13:45:43,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:45:43,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:45:43,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:43,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:45:43,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:45:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:45:44,147 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-18 13:45:44,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:45:44,148 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:45:44,158 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:45:44,181 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 13:45:44,181 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:45:44,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:45:44,198 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-18 13:45:44,202 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-18 13:45:44,202 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:45:44,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:45:44,222 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:45:44,222 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22 [2018-11-18 13:45:46,529 WARN L854 $PredicateComparison]: unable to prove that (exists ((|v_main_~#ad1~0.base_BEFORE_CALL_1| Int) (v_main_~i~0_18 Int) (|v_main_~#ad1~0.offset_BEFORE_CALL_1| Int)) (= v_main_~i~0_18 (select (select |c_#memory_int| |v_main_~#ad1~0.base_BEFORE_CALL_1|) (+ (* 8 v_main_~i~0_18) |v_main_~#ad1~0.offset_BEFORE_CALL_1|)))) is different from true [2018-11-18 13:45:52,855 WARN L180 SmtUtils]: Spent 6.18 s on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2018-11-18 13:45:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-18 13:45:52,925 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:45:52,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-18 13:45:52,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-18 13:45:52,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-18 13:45:52,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=203, Unknown=1, NotChecked=28, Total=272 [2018-11-18 13:45:52,927 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 17 states. [2018-11-18 13:45:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:45:53,182 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-11-18 13:45:53,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:45:53,182 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2018-11-18 13:45:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:45:53,183 INFO L225 Difference]: With dead ends: 48 [2018-11-18 13:45:53,183 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 13:45:53,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=81, Invalid=302, Unknown=1, NotChecked=36, Total=420 [2018-11-18 13:45:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 13:45:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 13:45:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 13:45:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:45:53,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-11-18 13:45:53,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:45:53,185 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:45:53,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-18 13:45:53,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:45:53,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 13:45:53,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 13:45:53,303 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:45:53,303 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:45:53,303 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 13:45:53,304 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point L21(lines 21 32) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2018-11-18 13:45:53,304 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2018-11-18 13:45:53,305 INFO L421 ceAbstractionStarter]: At program point L30(lines 15 38) the Hoare annotation is: false [2018-11-18 13:45:53,305 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 14 38) the Hoare annotation is: true [2018-11-18 13:45:53,305 INFO L425 ceAbstractionStarter]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2018-11-18 13:45:53,305 INFO L425 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2018-11-18 13:45:53,305 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2018-11-18 13:45:53,305 INFO L421 ceAbstractionStarter]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (= main_~pa~0.base |main_~#ad1~0.base|) (exists ((v_main_~i~0_18 Int)) (let ((.cse0 (+ (* 8 v_main_~i~0_18) |main_~#ad1~0.offset|))) (and (= .cse0 main_~pa~0.offset) (= v_main_~i~0_18 (select (select |#memory_int| main_~pa~0.base) .cse0)))))) [2018-11-18 13:45:53,306 INFO L421 ceAbstractionStarter]: At program point L26-5(lines 26 28) the Hoare annotation is: (let ((.cse0 (* 8 main_~i~0))) (and (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ .cse0 |main_~#ad1~0.offset|)) main_~i~0) (<= .cse0 (* 8 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (= 0 |main_~#ad1~0.offset|) (= main_~pa~0.base |main_~#ad1~0.base|) (exists ((v_main_~i~0_18 Int)) (let ((.cse1 (+ (* 8 v_main_~i~0_18) |main_~#ad1~0.offset|))) (and (= .cse1 main_~pa~0.offset) (= v_main_~i~0_18 (select (select |#memory_int| main_~pa~0.base) .cse1))))))) [2018-11-18 13:45:53,306 INFO L428 ceAbstractionStarter]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2018-11-18 13:45:53,306 INFO L425 ceAbstractionStarter]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2018-11-18 13:45:53,306 INFO L425 ceAbstractionStarter]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2018-11-18 13:45:53,312 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,313 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,313 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,315 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,315 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,320 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,321 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,321 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,321 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,321 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:45:53 BoogieIcfgContainer [2018-11-18 13:45:53,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:45:53,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:45:53,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:45:53,324 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:45:53,325 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:45:41" (3/4) ... [2018-11-18 13:45:53,328 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 13:45:53,334 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 13:45:53,334 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 13:45:53,334 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure check [2018-11-18 13:45:53,339 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-18 13:45:53,339 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 13:45:53,339 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:45:53,339 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 13:45:53,368 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((ad1 == 0 && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && (\exists v_main_~i~0_18 : int :: 8 * v_main_~i~0_18 + ad1 == pa && v_main_~i~0_18 == unknown-#memory_int-unknown[pa][8 * v_main_~i~0_18 + ad1]) [2018-11-18 13:45:53,384 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b7e8e6e9-f2f2-47d4-8786-3ec6406ebb84/bin-2019/uautomizer/witness.graphml [2018-11-18 13:45:53,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:45:53,385 INFO L168 Benchmark]: Toolchain (without parser) took 12411.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -113.1 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:53,385 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:45:53,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.39 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:53,386 INFO L168 Benchmark]: Boogie Preprocessor took 39.29 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:53,386 INFO L168 Benchmark]: RCFGBuilder took 354.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -155.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:53,387 INFO L168 Benchmark]: TraceAbstraction took 11729.15 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:53,387 INFO L168 Benchmark]: Witness Printer took 59.98 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:45:53,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 223.39 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.29 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 354.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -155.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11729.15 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: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Witness Printer took 59.98 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2018-11-18 13:45:53,394 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,394 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,394 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,395 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,395 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,395 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,395 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,395 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_18,QUANTIFIED] [2018-11-18 13:45:53,396 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-18 13:45:53,396 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((ad1 == 0 && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && pa == ad1) && (\exists v_main_~i~0_18 : int :: 8 * v_main_~i~0_18 + ad1 == pa && v_main_~i~0_18 == unknown-#memory_int-unknown[pa][8 * v_main_~i~0_18 + ad1]) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. SAFE Result, 11.6s OverallTime, 5 OverallIterations, 11 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 81 SDtfs, 33 SDslu, 156 SDs, 0 SdLazy, 119 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 23 NumberOfFragments, 93 HoareAnnotationTreeSize, 12 FomulaSimplifications, 489 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 224 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 216 ConstructedInterpolants, 37 QuantifiedInterpolants, 96974 SizeOfPredicates, 25 NumberOfNonLiveVariables, 273 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 281/396 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...