./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/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 3fb4305112f4412dd538a0b9d1d1441504f2d55d ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:59:01,079 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:59:01,080 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:59:01,088 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:59:01,088 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:59:01,088 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:59:01,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:59:01,090 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:59:01,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:59:01,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:59:01,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:59:01,092 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:59:01,093 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:59:01,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:59:01,094 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:59:01,095 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:59:01,096 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:59:01,097 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:59:01,098 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:59:01,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:59:01,100 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:59:01,101 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:59:01,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:59:01,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:59:01,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:59:01,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:59:01,104 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:59:01,104 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:59:01,105 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:59:01,106 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:59:01,106 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:59:01,106 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:59:01,107 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:59:01,107 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:59:01,107 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:59:01,108 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:59:01,108 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 07:59:01,117 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:59:01,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:59:01,118 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 07:59:01,118 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 07:59:01,119 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:59:01,119 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:59:01,119 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:59:01,119 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:59:01,119 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 07:59:01,120 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 07:59:01,121 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:59:01,121 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 07:59:01,121 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:59:01,121 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:59:01,121 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 07:59:01,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 07:59:01,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 07:59:01,122 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:59:01,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 07:59:01,122 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 07:59:01,122 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:59:01,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 07:59:01,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 07:59:01,122 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_22556513-c065-42f3-be3a-c02cf598a825/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 -> 3fb4305112f4412dd538a0b9d1d1441504f2d55d [2018-11-10 07:59:01,145 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:59:01,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:59:01,156 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:59:01,157 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:59:01,157 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:59:01,157 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c [2018-11-10 07:59:01,193 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/data/873419d51/941f1d861d11418e898cb1cc8b93e28a/FLAGbf12fd508 [2018-11-10 07:59:01,574 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:59:01,574 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/sv-benchmarks/c/ldv-regression/test07_true-unreach-call_true-termination.c [2018-11-10 07:59:01,578 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/data/873419d51/941f1d861d11418e898cb1cc8b93e28a/FLAGbf12fd508 [2018-11-10 07:59:01,586 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/data/873419d51/941f1d861d11418e898cb1cc8b93e28a [2018-11-10 07:59:01,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:59:01,589 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 07:59:01,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:59:01,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:59:01,592 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:59:01,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a7e98ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01, skipping insertion in model container [2018-11-10 07:59:01,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:59:01,611 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:59:01,699 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:59:01,706 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:59:01,715 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:59:01,724 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:59:01,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01 WrapperNode [2018-11-10 07:59:01,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:59:01,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:59:01,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:59:01,725 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:59:01,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... [2018-11-10 07:59:01,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:59:01,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:59:01,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:59:01,751 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:59:01,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/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 [2018-11-10 07:59:01,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 07:59:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:59:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2018-11-10 07:59:01,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 07:59:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 07:59:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure f [2018-11-10 07:59:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 07:59:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 07:59:01,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 07:59:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 07:59:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 07:59:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 07:59:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:59:01,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 07:59:01,970 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:59:01,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:59:01 BoogieIcfgContainer [2018-11-10 07:59:01,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:59:01,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 07:59:01,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 07:59:01,975 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 07:59:01,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 07:59:01" (1/3) ... [2018-11-10 07:59:01,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74aca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:59:01, skipping insertion in model container [2018-11-10 07:59:01,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:59:01" (2/3) ... [2018-11-10 07:59:01,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74aca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 07:59:01, skipping insertion in model container [2018-11-10 07:59:01,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:59:01" (3/3) ... [2018-11-10 07:59:01,977 INFO L112 eAbstractionObserver]: Analyzing ICFG test07_true-unreach-call_true-termination.c [2018-11-10 07:59:01,985 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 07:59:01,993 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 07:59:02,006 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 07:59:02,031 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:59:02,031 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 07:59:02,031 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 07:59:02,032 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 07:59:02,032 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:59:02,032 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:59:02,032 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 07:59:02,032 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:59:02,032 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 07:59:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-10 07:59:02,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 07:59:02,051 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:59:02,052 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:59:02,054 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:59:02,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:59:02,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1814747738, now seen corresponding path program 1 times [2018-11-10 07:59:02,060 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:59:02,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:59:02,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:59:02,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:59:02,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:59:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:59:02,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:59:02,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:59:02,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-10 07:59:02,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-10 07:59:02,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-10 07:59:02,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-10 07:59:02,336 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2018-11-10 07:59:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:59:02,440 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-11-10 07:59:02,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 07:59:02,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-11-10 07:59:02,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:59:02,449 INFO L225 Difference]: With dead ends: 53 [2018-11-10 07:59:02,449 INFO L226 Difference]: Without dead ends: 32 [2018-11-10 07:59:02,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-10 07:59:02,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-10 07:59:02,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-10 07:59:02,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-10 07:59:02,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2018-11-10 07:59:02,475 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 31 [2018-11-10 07:59:02,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:59:02,475 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2018-11-10 07:59:02,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-10 07:59:02,475 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2018-11-10 07:59:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 07:59:02,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 07:59:02,476 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:59:02,476 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 07:59:02,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:59:02,477 INFO L82 PathProgramCache]: Analyzing trace with hash 7293275, now seen corresponding path program 1 times [2018-11-10 07:59:02,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:59:02,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:59:02,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:59:02,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:59:02,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:59:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:59:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:59:02,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 07:59:02,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-10 07:59:02,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 07:59:02,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 07:59:02,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2018-11-10 07:59:02,781 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 13 states. [2018-11-10 07:59:03,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 07:59:03,179 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2018-11-10 07:59:03,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-10 07:59:03,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2018-11-10 07:59:03,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 07:59:03,180 INFO L225 Difference]: With dead ends: 32 [2018-11-10 07:59:03,180 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 07:59:03,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2018-11-10 07:59:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 07:59:03,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 07:59:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 07:59:03,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 07:59:03,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2018-11-10 07:59:03,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 07:59:03,182 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:59:03,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 07:59:03,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 07:59:03,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 07:59:03,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 07:59:03,260 INFO L425 ceAbstractionStarter]: For program point L4-3(line 4) no Hoare annotation was computed. [2018-11-10 07:59:03,260 INFO L425 ceAbstractionStarter]: For program point L4-4(line 4) no Hoare annotation was computed. [2018-11-10 07:59:03,260 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L421 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L4-1(line 4) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L4-2(line 4) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L425 ceAbstractionStarter]: For program point L8-2(line 8) no Hoare annotation was computed. [2018-11-10 07:59:03,261 INFO L421 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (not (= ~p2~0.base |~#b~0.base|)) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (and (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| ~p1~0.base)) (= |~#a~0.base| ~p2~0.base) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= (select |#valid| |~#a~0.base|) 1))) [2018-11-10 07:59:03,262 INFO L425 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2018-11-10 07:59:03,262 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 07:59:03,262 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= (select |#valid| |~#a~0.base|) 1)) [2018-11-10 07:59:03,262 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 07:59:03,262 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 07:59:03,262 INFO L421 ceAbstractionStarter]: At program point L30(lines 17 37) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2018-11-10 07:59:03,262 INFO L421 ceAbstractionStarter]: At program point mainENTRY(lines 17 37) the Hoare annotation is: (or (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2018-11-10 07:59:03,262 INFO L425 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-11-10 07:59:03,262 INFO L425 ceAbstractionStarter]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2018-11-10 07:59:03,262 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (and (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset)) (= |~#a~0.offset| ~p1~0.offset) (= |~#b~0.offset| ~p2~0.offset) (= ~p2~0.base |~#b~0.base|) (= |~#a~0.base| ~p1~0.base)) (not (= (select |#valid| |~#a~0.base|) 1))) [2018-11-10 07:59:03,262 INFO L425 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L27-2(line 27) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 37) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L27-3(line 27) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L25-2(line 25) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2018-11-10 07:59:03,263 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 17 37) no Hoare annotation was computed. [2018-11-10 07:59:03,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 07:59:03 BoogieIcfgContainer [2018-11-10 07:59:03,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 07:59:03,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:59:03,274 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:59:03,275 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:59:03,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:59:01" (3/4) ... [2018-11-10 07:59:03,278 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 07:59:03,283 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 07:59:03,283 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2018-11-10 07:59:03,283 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 07:59:03,286 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2018-11-10 07:59:03,287 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 07:59:03,287 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-10 07:59:03,318 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_22556513-c065-42f3-be3a-c02cf598a825/bin-2019/uautomizer/witness.graphml [2018-11-10 07:59:03,318 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:59:03,319 INFO L168 Benchmark]: Toolchain (without parser) took 1730.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 960.2 MB in the beginning and 906.5 MB in the end (delta: 53.7 MB). Peak memory consumption was 174.8 MB. Max. memory is 11.5 GB. [2018-11-10 07:59:03,320 INFO L168 Benchmark]: CDTParser took 0.11 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. [2018-11-10 07:59:03,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.85 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:59:03,321 INFO L168 Benchmark]: Boogie Preprocessor took 26.16 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:59:03,321 INFO L168 Benchmark]: RCFGBuilder took 220.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:59:03,321 INFO L168 Benchmark]: TraceAbstraction took 1302.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.2 MB in the end (delta: 196.9 MB). Peak memory consumption was 196.9 MB. Max. memory is 11.5 GB. [2018-11-10 07:59:03,322 INFO L168 Benchmark]: Witness Printer took 43.92 ms. Allocated memory is still 1.2 GB. Free memory was 909.2 MB in the beginning and 906.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 07:59:03,323 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 134.85 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.16 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 220.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -159.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1302.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.2 MB in the end (delta: 196.9 MB). Peak memory consumption was 196.9 MB. Max. memory is 11.5 GB. * Witness Printer took 43.92 ms. Allocated memory is still 1.2 GB. Free memory was 909.2 MB in the beginning and 906.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: 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: 17]: Loop Invariant Derived loop invariant: a == b || !(\valid[a] == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 45 SDslu, 122 SDs, 0 SdLazy, 163 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 116 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 12870 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...