./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI --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 57db2827f748fdac723600595d50868896f17762 ................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:44,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:44,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:44,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:44,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:44,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:44,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:44,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:44,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:44,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:44,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:44,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:44,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:44,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:44,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:44,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:44,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:44,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:44,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:44,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:44,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:44,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:44,735 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:44,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:44,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:44,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:44,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:44,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:44,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:44,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:44,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:44,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:44,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:44,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:44,749 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:44,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:44,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:44,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:44,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:44,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:44,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:44,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:44,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:44,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:44,802 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:44,803 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:44,803 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:44,803 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:44,804 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:44,804 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:44,804 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:44,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:44,806 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:44,806 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:44,806 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:44,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:44,807 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:44,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:44,808 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:44,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:44,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:44,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:44,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:44,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:44,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:44,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:44,810 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:44,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:44,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:44,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:44,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:44,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:44,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:44,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:44,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:44,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:44,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:44,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:44,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:44,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:44,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:44,816 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_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57db2827f748fdac723600595d50868896f17762 [2021-10-11 02:27:45,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:45,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:45,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:45,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:45,121 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:45,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-10-11 02:27:45,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/data/b0f7e212e/c53504c57c6e462ebf3d4ecdb83995d5/FLAG6b6e12626 [2021-10-11 02:27:45,662 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:45,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-10-11 02:27:45,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/data/b0f7e212e/c53504c57c6e462ebf3d4ecdb83995d5/FLAG6b6e12626 [2021-10-11 02:27:46,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/data/b0f7e212e/c53504c57c6e462ebf3d4ecdb83995d5 [2021-10-11 02:27:46,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:46,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:46,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:46,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:46,101 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:46,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb0cd65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46, skipping insertion in model container [2021-10-11 02:27:46,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:46,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:46,365 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/sv-benchmarks/c/loop-zilu/benchmark25_linear.i[868,881] [2021-10-11 02:27:46,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:46,381 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:46,394 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/sv-benchmarks/c/loop-zilu/benchmark25_linear.i[868,881] [2021-10-11 02:27:46,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:46,411 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:46,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46 WrapperNode [2021-10-11 02:27:46,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:46,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:46,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:46,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:46,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,444 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:46,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:46,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:46,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:46,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... [2021-10-11 02:27:46,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:46,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:46,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:46,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:46,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:46,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:46,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:46,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:46,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:46,746 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:27:46,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:46 BoogieIcfgContainer [2021-10-11 02:27:46,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:46,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:46,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:46,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:46,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:46" (1/3) ... [2021-10-11 02:27:46,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7172eb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:46, skipping insertion in model container [2021-10-11 02:27:46,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:46" (2/3) ... [2021-10-11 02:27:46,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7172eb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:46, skipping insertion in model container [2021-10-11 02:27:46,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:46" (3/3) ... [2021-10-11 02:27:46,759 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2021-10-11 02:27:46,774 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:46,778 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:27:46,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:27:46,816 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:46,816 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:46,816 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:46,817 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:46,817 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:46,817 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:46,817 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:46,817 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:46,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:27:46,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:46,832 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:46,833 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:46,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:46,839 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-11 02:27:46,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:46,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340682112] [2021-10-11 02:27:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:47,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340682112] [2021-10-11 02:27:47,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:47,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:47,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878169369] [2021-10-11 02:27:47,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:47,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:47,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:47,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:47,036 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:27:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:47,069 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-11 02:27:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:47,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:27:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:47,080 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:27:47,081 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:27:47,084 INFO L677 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 [2021-10-11 02:27:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:27:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:27:47,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:27:47,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:27:47,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-11 02:27:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:47,147 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:27:47,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:27:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:47,148 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:47,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:47,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:47,149 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:47,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:47,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-11 02:27:47,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:47,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747760249] [2021-10-11 02:27:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:47,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747760249] [2021-10-11 02:27:47,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865214904] [2021-10-11 02:27:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:27:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:47,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:47,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:47,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:47,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [736494569] [2021-10-11 02:27:47,496 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:27:47,496 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:27:47,502 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:27:47,510 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:27:47,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:27:47,924 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:27:48,147 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2021-10-11 02:27:48,322 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:48,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:27:48,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-10-11 02:27:48,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080633050] [2021-10-11 02:27:48,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:48,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:48,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:48,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:48,334 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2021-10-11 02:27:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:48,359 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:27:48,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:48,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2021-10-11 02:27:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:48,362 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:27:48,366 INFO L226 Difference]: Without dead ends: 10 [2021-10-11 02:27:48,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:48,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-11 02:27:48,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-11 02:27:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-11 02:27:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-11 02:27:48,373 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-10-11 02:27:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:48,374 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-11 02:27:48,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-11 02:27:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:48,375 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:48,376 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-11 02:27:48,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:27:48,596 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:48,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:48,596 INFO L82 PathProgramCache]: Analyzing trace with hash 1390313566, now seen corresponding path program 2 times [2021-10-11 02:27:48,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:48,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054516319] [2021-10-11 02:27:48,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:27:48,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054516319] [2021-10-11 02:27:48,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:48,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:48,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202254860] [2021-10-11 02:27:48,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:48,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:48,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:48,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:48,678 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2021-10-11 02:27:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:48,696 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-10-11 02:27:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:27:48,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-10-11 02:27:48,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:48,697 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:27:48,697 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:48,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:48,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-11 02:27:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:48,701 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:48,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:48,702 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:48,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:27:48,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:48,713 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:48,714 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 02:27:48,714 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 02:27:48,714 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:48,714 INFO L265 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-10-11 02:27:48,715 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 02:27:48,715 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 10) [2021-10-11 02:27:48,715 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:27:48,715 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-11 02:27:48,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:48 BoogieIcfgContainer [2021-10-11 02:27:48,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:48,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:48,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:48,733 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:48,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:46" (3/4) ... [2021-10-11 02:27:48,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:48,746 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:27:48,746 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:27:48,746 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:48,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:48,778 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4dcda407-13b1-46b6-9c6f-e2c2011cbcf8/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:48,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:48,779 INFO L168 Benchmark]: Toolchain (without parser) took 2688.63 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 74.9 MB in the beginning and 62.4 MB in the end (delta: 12.5 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,780 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 107.0 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:48,781 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.64 ms. Allocated memory is still 107.0 MB. Free memory was 74.6 MB in the beginning and 83.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,781 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.29 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 82.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,782 INFO L168 Benchmark]: Boogie Preprocessor took 20.09 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.8 MB in the end (delta: 966.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:48,782 INFO L168 Benchmark]: RCFGBuilder took 283.88 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 68.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,783 INFO L168 Benchmark]: TraceAbstraction took 1980.50 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.6 MB in the beginning and 64.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,784 INFO L168 Benchmark]: Witness Printer took 45.34 ms. Allocated memory is still 130.0 MB. Free memory was 64.4 MB in the beginning and 62.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:48,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 107.0 MB. Free memory was 61.9 MB in the beginning and 61.9 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.64 ms. Allocated memory is still 107.0 MB. Free memory was 74.6 MB in the beginning and 83.9 MB in the end (delta: -9.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.29 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 82.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.09 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.8 MB in the end (delta: 966.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.88 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 68.8 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1980.50 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 68.6 MB in the beginning and 64.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. * Witness Printer took 45.34 ms. Allocated memory is still 130.0 MB. Free memory was 64.4 MB in the beginning and 62.4 MB in the end (delta: 2.0 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: 16]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 1 SDslu, 9 SDs, 0 SdLazy, 16 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 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...