./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i --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_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/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 6ee0c0bb9185005ad94b7785b09df595a41ce360 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 16:03:39,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 16:03:39,903 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 16:03:39,918 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 16:03:39,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 16:03:39,921 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 16:03:39,922 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 16:03:39,923 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 16:03:39,924 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 16:03:39,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 16:03:39,926 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 16:03:39,926 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 16:03:39,927 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 16:03:39,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 16:03:39,929 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 16:03:39,929 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 16:03:39,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 16:03:39,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 16:03:39,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 16:03:39,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 16:03:39,936 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 16:03:39,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 16:03:39,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 16:03:39,939 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 16:03:39,939 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 16:03:39,940 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 16:03:39,941 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 16:03:39,942 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 16:03:39,943 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 16:03:39,944 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 16:03:39,944 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 16:03:39,945 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 16:03:39,945 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 16:03:39,945 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 16:03:39,946 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 16:03:39,946 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 16:03:39,947 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 16:03:39,957 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 16:03:39,957 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 16:03:39,958 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 16:03:39,958 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 16:03:39,959 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 16:03:39,959 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 16:03:39,959 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 16:03:39,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 16:03:39,960 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 16:03:39,961 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 16:03:39,961 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 16:03:39,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 16:03:39,962 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 16:03:39,962 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 16:03:39,962 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 16:03:39,962 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 16:03:39,962 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 16:03:39,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 16:03:39,963 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_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/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 -> 6ee0c0bb9185005ad94b7785b09df595a41ce360 [2018-11-18 16:03:39,987 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 16:03:40,008 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 16:03:40,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 16:03:40,012 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 16:03:40,012 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 16:03:40,013 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-11-18 16:03:40,055 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/data/d911a9f52/b6edddafeadf40679d17fed69a25ba6f/FLAGa8fa25907 [2018-11-18 16:03:40,399 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 16:03:40,399 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/sv-benchmarks/c/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-11-18 16:03:40,403 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/data/d911a9f52/b6edddafeadf40679d17fed69a25ba6f/FLAGa8fa25907 [2018-11-18 16:03:40,820 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/data/d911a9f52/b6edddafeadf40679d17fed69a25ba6f [2018-11-18 16:03:40,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 16:03:40,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 16:03:40,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 16:03:40,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 16:03:40,825 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 16:03:40,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:03:40" (1/1) ... [2018-11-18 16:03:40,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5abf726c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:40, skipping insertion in model container [2018-11-18 16:03:40,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:03:40" (1/1) ... [2018-11-18 16:03:40,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 16:03:40,846 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 16:03:41,012 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:03:41,018 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 16:03:41,050 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 16:03:41,065 INFO L195 MainTranslator]: Completed translation [2018-11-18 16:03:41,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41 WrapperNode [2018-11-18 16:03:41,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 16:03:41,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 16:03:41,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 16:03:41,067 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 16:03:41,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... [2018-11-18 16:03:41,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 16:03:41,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 16:03:41,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 16:03:41,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 16:03:41,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/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 16:03:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 16:03:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 16:03:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 16:03:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 16:03:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 16:03:41,658 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 16:03:41,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:03:41 BoogieIcfgContainer [2018-11-18 16:03:41,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 16:03:41,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 16:03:41,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 16:03:41,663 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 16:03:41,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:03:40" (1/3) ... [2018-11-18 16:03:41,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e6175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:03:41, skipping insertion in model container [2018-11-18 16:03:41,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:03:41" (2/3) ... [2018-11-18 16:03:41,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@451e6175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:03:41, skipping insertion in model container [2018-11-18 16:03:41,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:03:41" (3/3) ... [2018-11-18 16:03:41,667 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2018-11-18 16:03:41,674 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 16:03:41,679 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 16:03:41,689 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 16:03:41,712 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 16:03:41,712 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 16:03:41,712 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 16:03:41,712 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 16:03:41,712 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 16:03:41,713 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 16:03:41,713 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 16:03:41,713 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 16:03:41,713 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 16:03:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 16:03:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 16:03:41,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:41,731 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:41,733 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:41,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:41,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-11-18 16:03:41,740 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:41,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:41,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:41,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:41,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:41,810 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 16:03:41,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:41,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 16:03:41,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 16:03:41,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 16:03:41,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 16:03:41,824 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 16:03:41,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:41,838 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-18 16:03:41,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 16:03:41,840 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-18 16:03:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:41,847 INFO L225 Difference]: With dead ends: 31 [2018-11-18 16:03:41,847 INFO L226 Difference]: Without dead ends: 12 [2018-11-18 16:03:41,850 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 16:03:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-18 16:03:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-18 16:03:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-18 16:03:41,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-18 16:03:41,874 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-18 16:03:41,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:41,874 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-18 16:03:41,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 16:03:41,875 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-18 16:03:41,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 16:03:41,875 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:41,875 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:41,875 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:41,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:41,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-11-18 16:03:41,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:41,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:41,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:41,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:41,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:41,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:41,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:41,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 16:03:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 16:03:41,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 16:03:41,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:03:41,926 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-11-18 16:03:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:41,942 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-18 16:03:41,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 16:03:41,943 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 16:03:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:41,944 INFO L225 Difference]: With dead ends: 19 [2018-11-18 16:03:41,944 INFO L226 Difference]: Without dead ends: 14 [2018-11-18 16:03:41,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 16:03:41,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-18 16:03:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-18 16:03:41,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 16:03:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-18 16:03:41,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-18 16:03:41,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:41,949 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-18 16:03:41,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 16:03:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-18 16:03:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 16:03:41,950 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:41,951 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:41,951 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:41,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:41,951 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-11-18 16:03:41,951 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:41,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:41,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:41,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:41,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:41,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,031 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:03:42,031 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/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 16:03:42,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:42,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:03:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,140 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:03:42,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-11-18 16:03:42,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 16:03:42,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 16:03:42,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:03:42,141 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-11-18 16:03:42,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:42,175 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-18 16:03:42,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 16:03:42,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-18 16:03:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:42,177 INFO L225 Difference]: With dead ends: 21 [2018-11-18 16:03:42,177 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 16:03:42,177 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-18 16:03:42,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 16:03:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 16:03:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 16:03:42,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-18 16:03:42,180 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-18 16:03:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:42,181 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-18 16:03:42,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 16:03:42,181 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-18 16:03:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 16:03:42,181 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:42,181 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:42,182 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:42,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash 622365701, now seen corresponding path program 2 times [2018-11-18 16:03:42,182 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:42,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:42,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 16:03:42,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:03:42,241 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/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 16:03:42,250 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 16:03:42,258 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 16:03:42,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:03:42,260 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:03:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:03:42,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 16:03:42,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 16:03:42,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 16:03:42,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:03:42,424 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-11-18 16:03:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:42,435 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-18 16:03:42,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 16:03:42,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-11-18 16:03:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:42,437 INFO L225 Difference]: With dead ends: 23 [2018-11-18 16:03:42,437 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 16:03:42,437 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-18 16:03:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 16:03:42,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 16:03:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 16:03:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-18 16:03:42,441 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-18 16:03:42,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:42,441 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-18 16:03:42,441 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 16:03:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-18 16:03:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 16:03:42,442 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:42,442 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:42,442 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:42,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:42,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2058417419, now seen corresponding path program 3 times [2018-11-18 16:03:42,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:42,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:42,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,444 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:03:42,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:03:42,524 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/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 16:03:42,537 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 16:03:42,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 16:03:42,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:03:42,559 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:03:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:03:42,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-11-18 16:03:42,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 16:03:42,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 16:03:42,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:03:42,654 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-11-18 16:03:42,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:42,678 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-18 16:03:42,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 16:03:42,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-11-18 16:03:42,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:42,679 INFO L225 Difference]: With dead ends: 25 [2018-11-18 16:03:42,679 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 16:03:42,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:03:42,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 16:03:42,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-18 16:03:42,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 16:03:42,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-18 16:03:42,683 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-11-18 16:03:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:42,683 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-18 16:03:42,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 16:03:42,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-18 16:03:42,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 16:03:42,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:42,684 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:42,684 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:42,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:42,684 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 4 times [2018-11-18 16:03:42,684 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:42,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:42,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,685 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:03:42,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 16:03:42,800 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 16:03:42,820 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 16:03:42,828 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 16:03:42,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 16:03:42,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 16:03:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:42,902 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 16:03:42,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 16:03:42,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 16:03:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 16:03:42,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-18 16:03:42,903 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2018-11-18 16:03:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:42,984 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-18 16:03:42,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 16:03:42,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-18 16:03:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:42,985 INFO L225 Difference]: With dead ends: 27 [2018-11-18 16:03:42,985 INFO L226 Difference]: Without dead ends: 22 [2018-11-18 16:03:42,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-18 16:03:42,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-18 16:03:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-18 16:03:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 16:03:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-18 16:03:42,990 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-11-18 16:03:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:42,990 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-18 16:03:42,990 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 16:03:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-18 16:03:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 16:03:42,991 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 16:03:42,991 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 16:03:42,991 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 16:03:42,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 16:03:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1566812823, now seen corresponding path program 5 times [2018-11-18 16:03:42,991 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 16:03:42,991 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 16:03:42,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:42,992 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 16:03:42,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 16:03:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 16:03:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 16:03:43,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 16:03:43,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 16:03:43,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 16:03:43,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 16:03:43,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:43,217 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2018-11-18 16:03:43,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 16:03:43,234 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-18 16:03:43,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 16:03:43,235 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-11-18 16:03:43,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 16:03:43,235 INFO L225 Difference]: With dead ends: 22 [2018-11-18 16:03:43,235 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 16:03:43,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-18 16:03:43,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 16:03:43,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 16:03:43,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 16:03:43,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 16:03:43,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-11-18 16:03:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 16:03:43,236 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 16:03:43,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 16:03:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 16:03:43,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 16:03:43,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 16:03:43,352 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 16:03:43,352 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 16:03:43,353 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 16:03:43,353 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-11-18 16:03:43,353 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-11-18 16:03:43,353 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (or (and (<= 8 main_~j~0) (<= main_~j~0 (+ main_~i~0 3)) (<= main_~i~0 5)) (and (<= 6 main_~j~0) (<= (+ main_~j~0 3) main_~i~0) (<= main_~j~0 6)) (and (<= main_~j~0 (+ main_~i~0 9)) (<= main_~i~0 1) (<= 10 main_~j~0)) (and (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~i~0 7)) (and (<= main_~i~0 3) (<= main_~j~0 (+ main_~i~0 6)) (<= 9 main_~j~0))) [2018-11-18 16:03:43,354 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 17) the Hoare annotation is: (and (<= 6 main_~j~0) (<= main_~j~0 6)) [2018-11-18 16:03:43,354 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 16:03:43,354 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 16:03:43,354 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 16:03:43,354 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 16:03:43,354 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 16:03:43,354 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 16:03:43,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 04:03:43 BoogieIcfgContainer [2018-11-18 16:03:43,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 16:03:43,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 16:03:43,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 16:03:43,370 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 16:03:43,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:03:41" (3/4) ... [2018-11-18 16:03:43,373 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 16:03:43,378 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 16:03:43,379 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 16:03:43,379 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 16:03:43,381 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-18 16:03:43,382 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 16:03:43,382 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 16:03:43,408 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e7f4aefa-e6c3-49e6-a203-2529853cd1d5/bin-2019/uautomizer/witness.graphml [2018-11-18 16:03:43,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 16:03:43,409 INFO L168 Benchmark]: Toolchain (without parser) took 2586.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 954.4 MB in the beginning and 1.0 GB in the end (delta: -47.2 MB). Peak memory consumption was 93.8 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:43,410 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 16:03:43,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.41 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:43,411 INFO L168 Benchmark]: Boogie Preprocessor took 75.51 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:43,411 INFO L168 Benchmark]: RCFGBuilder took 516.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:43,412 INFO L168 Benchmark]: TraceAbstraction took 1709.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 127.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:43,412 INFO L168 Benchmark]: Witness Printer took 38.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 16:03:43,415 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.41 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.51 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 516.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -190.3 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1709.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 127.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.84 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 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: 5]: 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: 14]: Loop Invariant Derived loop invariant: (((((8 <= j && j <= i + 3) && i <= 5) || ((6 <= j && j + 3 <= i) && j <= 6)) || ((j <= i + 9 && i <= 1) && 10 <= j)) || ((7 <= j && j <= i) && i <= 7)) || ((i <= 3 && j <= i + 6) && 9 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 1 SDslu, 174 SDs, 0 SdLazy, 94 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=6, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 71 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 170 NumberOfCodeBlocks, 170 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 8277 SizeOfPredicates, 8 NumberOfNonLiveVariables, 160 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 30/110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...