./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cbba3ede4e91b7384b0dde986cc9a2a86c4a62c3 ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:32:33,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:32:33,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:32:33,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:32:33,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:32:33,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:32:33,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:32:33,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:32:33,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:32:33,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:32:33,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:32:33,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:32:33,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:32:33,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:32:33,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:32:33,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:32:33,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:32:33,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:32:33,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:32:33,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:32:33,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:32:33,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:32:33,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:32:33,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:32:33,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:32:33,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:32:33,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:32:33,583 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:32:33,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:32:33,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:32:33,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:32:33,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:32:33,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:32:33,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:32:33,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:32:33,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:32:33,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:32:33,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:32:33,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:32:33,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:32:33,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:32:33,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:32:33,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:32:33,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:32:33,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:32:33,608 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:32:33,608 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:32:33,608 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:32:33,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:32:33,609 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:32:33,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:32:33,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:32:33,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:32:33,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:32:33,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:32:33,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:32:33,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:32:33,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:32:33,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:32:33,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:32:33,612 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbba3ede4e91b7384b0dde986cc9a2a86c4a62c3 [2020-12-09 10:32:33,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:32:33,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:32:33,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:32:33,802 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:32:33,803 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:32:33,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/../../sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-12-09 10:32:33,843 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/data/8e5911808/54bef58de5f84f6fb9e67d4e55f23a48/FLAG88397b60f [2020-12-09 10:32:34,189 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:32:34,189 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c [2020-12-09 10:32:34,194 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/data/8e5911808/54bef58de5f84f6fb9e67d4e55f23a48/FLAG88397b60f [2020-12-09 10:32:34,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/data/8e5911808/54bef58de5f84f6fb9e67d4e55f23a48 [2020-12-09 10:32:34,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:32:34,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:32:34,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:32:34,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:32:34,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:32:34,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e642bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34, skipping insertion in model container [2020-12-09 10:32:34,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:32:34,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:32:34,353 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c[1110,1123] [2020-12-09 10:32:34,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:32:34,363 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:32:34,375 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/sv-benchmarks/c/loop-lit/jm2006.c.i.v+cfa-reducer.c[1110,1123] [2020-12-09 10:32:34,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:32:34,390 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:32:34,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34 WrapperNode [2020-12-09 10:32:34,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:32:34,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:32:34,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:32:34,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:32:34,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:32:34,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:32:34,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:32:34,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:32:34,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... [2020-12-09 10:32:34,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:32:34,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:32:34,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:32:34,432 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:32:34,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/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 [2020-12-09 10:32:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:32:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:32:34,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:32:34,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:32:34,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:32:34,647 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 10:32:34,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:32:34 BoogieIcfgContainer [2020-12-09 10:32:34,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:32:34,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:32:34,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:32:34,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:32:34,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:32:34" (1/3) ... [2020-12-09 10:32:34,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d7d752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:32:34, skipping insertion in model container [2020-12-09 10:32:34,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:32:34" (2/3) ... [2020-12-09 10:32:34,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d7d752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:32:34, skipping insertion in model container [2020-12-09 10:32:34,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:32:34" (3/3) ... [2020-12-09 10:32:34,661 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2020-12-09 10:32:34,682 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:32:34,684 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:32:34,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:32:34,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:32:34,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:32:34,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:32:34,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:32:34,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:32:34,707 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:32:34,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:32:34,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:32:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-09 10:32:34,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 10:32:34,719 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:32:34,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:32:34,720 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:32:34,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:32:34,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2065207914, now seen corresponding path program 1 times [2020-12-09 10:32:34,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:32:34,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47700752] [2020-12-09 10:32:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:32:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:32:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:32:34,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47700752] [2020-12-09 10:32:34,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:32:34,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 10:32:34,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343716967] [2020-12-09 10:32:34,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 10:32:34,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:32:34,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 10:32:34,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:32:34,930 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 5 states. [2020-12-09 10:32:35,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:32:35,033 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-12-09 10:32:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:32:35,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-09 10:32:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:32:35,040 INFO L225 Difference]: With dead ends: 23 [2020-12-09 10:32:35,040 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 10:32:35,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 10:32:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 10:32:35,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 10:32:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 10:32:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-09 10:32:35,063 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-12-09 10:32:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:32:35,064 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-09 10:32:35,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 10:32:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-09 10:32:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:32:35,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:32:35,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:32:35,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:32:35,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:32:35,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:32:35,065 INFO L82 PathProgramCache]: Analyzing trace with hash -405003410, now seen corresponding path program 1 times [2020-12-09 10:32:35,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:32:35,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674112735] [2020-12-09 10:32:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:32:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:32:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:32:35,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674112735] [2020-12-09 10:32:35,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118411789] [2020-12-09 10:32:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:32:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:32:35,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 10:32:35,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:32:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:32:35,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:32:35,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:32:35,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2032196228] [2020-12-09 10:32:35,361 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 10:32:35,362 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 10:32:35,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 10:32:35,370 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 10:32:35,370 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 10:32:35,770 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 10:32:35,917 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 43 [2020-12-09 10:32:36,468 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 10:32:36,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 10:32:36,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2020-12-09 10:32:36,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861873293] [2020-12-09 10:32:36,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 10:32:36,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:32:36,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 10:32:36,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-12-09 10:32:36,472 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2020-12-09 10:32:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:32:36,557 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-12-09 10:32:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 10:32:36,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2020-12-09 10:32:36,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:32:36,557 INFO L225 Difference]: With dead ends: 12 [2020-12-09 10:32:36,557 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:32:36,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-12-09 10:32:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:32:36,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:32:36,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:32:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:32:36,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-09 10:32:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:32:36,559 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:32:36,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 10:32:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:32:36,559 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:32:36,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 10:32:36,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:32:36,831 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:32:36,831 INFO L262 CegarLoopResult]: For program point L25(lines 25 68) no Hoare annotation was computed. [2020-12-09 10:32:36,831 INFO L262 CegarLoopResult]: For program point L19(lines 19 69) no Hoare annotation was computed. [2020-12-09 10:32:36,831 INFO L262 CegarLoopResult]: For program point L44(lines 44 66) no Hoare annotation was computed. [2020-12-09 10:32:36,831 INFO L258 CegarLoopResult]: At program point L40(lines 30 68) the Hoare annotation is: (let ((.cse1 (+ ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__y~0)) (.cse0 (+ ULTIMATE.start_main_~main__x~0 ULTIMATE.start_main_~main__j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-12-09 10:32:36,832 INFO L265 CegarLoopResult]: At program point L65(lines 13 70) the Hoare annotation is: true [2020-12-09 10:32:36,832 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:32:36,832 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 53) no Hoare annotation was computed. [2020-12-09 10:32:36,832 INFO L262 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-12-09 10:32:36,832 INFO L262 CegarLoopResult]: For program point L51(lines 51 60) no Hoare annotation was computed. [2020-12-09 10:32:36,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:32:36 BoogieIcfgContainer [2020-12-09 10:32:36,843 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:32:36,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:32:36,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:32:36,844 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:32:36,844 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:32:34" (3/4) ... [2020-12-09 10:32:36,846 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:32:36,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 10:32:36,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 10:32:36,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:32:36,852 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:32:36,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a3b8476f-9b04-468c-8541-240ff2f9d31b/bin/utaipan/witness.graphml [2020-12-09 10:32:36,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:32:36,888 INFO L168 Benchmark]: Toolchain (without parser) took 2681.36 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 59.1 MB in the beginning and 70.4 MB in the end (delta: -11.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:32:36,888 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:32:36,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.33 ms. Allocated memory is still 96.5 MB. Free memory was 58.9 MB in the beginning and 73.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:32:36,889 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.89 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:32:36,890 INFO L168 Benchmark]: Boogie Preprocessor took 14.83 ms. Allocated memory is still 96.5 MB. Free memory was 71.9 MB in the beginning and 70.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:32:36,890 INFO L168 Benchmark]: RCFGBuilder took 217.13 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 57.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:32:36,891 INFO L168 Benchmark]: TraceAbstraction took 2193.71 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 56.9 MB in the beginning and 73.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:32:36,891 INFO L168 Benchmark]: Witness Printer took 43.30 ms. Allocated memory is still 121.6 MB. Free memory was 73.6 MB in the beginning and 70.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:32:36,894 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 75.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 183.33 ms. Allocated memory is still 96.5 MB. Free memory was 58.9 MB in the beginning and 73.3 MB in the end (delta: -14.4 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.89 ms. Allocated memory is still 96.5 MB. Free memory was 72.9 MB in the beginning and 71.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.83 ms. Allocated memory is still 96.5 MB. Free memory was 71.9 MB in the beginning and 70.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 217.13 ms. Allocated memory is still 96.5 MB. Free memory was 70.8 MB in the beginning and 57.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2193.71 ms. Allocated memory was 96.5 MB in the beginning and 121.6 MB in the end (delta: 25.2 MB). Free memory was 56.9 MB in the beginning and 73.6 MB in the end (delta: -16.7 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Witness Printer took 43.30 ms. Allocated memory is still 121.6 MB. Free memory was 73.6 MB in the beginning and 70.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: main__x + main__j <= main__i + main__y && main__i + main__y <= main__x + main__j - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 21 SDslu, 20 SDs, 0 SdLazy, 63 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 49 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 1340 SizeOfPredicates, 7 NumberOfNonLiveVariables, 65 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...