./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.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_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/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_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/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_0271adb0-f82d-44f5-823a-1ef6a02bbbba/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 53bb793d04b8582ac13d1842856082c93ca272cf ......................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:29:15,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:15,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:15,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:15,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:15,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:15,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:15,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:15,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:15,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:15,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:15,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:15,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:15,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:15,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:15,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:15,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:15,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:15,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:15,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:15,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:15,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:15,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:15,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:15,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:15,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:15,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:15,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:15,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:15,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:15,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:15,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:15,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:15,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:15,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:15,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:15,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:15,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:15,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:15,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:15,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:15,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:15,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:15,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:15,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:15,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:15,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:15,139 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:15,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:15,140 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:15,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:15,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:15,140 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:15,140 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:15,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:15,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:15,141 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:15,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:15,142 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:15,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:15,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:15,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:15,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:15,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:15,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:15,143 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:15,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:15,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:15,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:15,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:15,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:15,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:15,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:15,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:15,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:15,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:15,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:15,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:15,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:15,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:15,146 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:15,146 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_0271adb0-f82d-44f5-823a-1ef6a02bbbba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53bb793d04b8582ac13d1842856082c93ca272cf [2021-10-11 02:29:15,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:15,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:15,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:15,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:15,463 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:15,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2021-10-11 02:29:15,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/data/4c4ca2631/426ff3a3ccb247d2a5afcbdcd35f4481/FLAG61492368d [2021-10-11 02:29:15,917 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:15,918 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2021-10-11 02:29:15,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/data/4c4ca2631/426ff3a3ccb247d2a5afcbdcd35f4481/FLAG61492368d [2021-10-11 02:29:16,310 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/data/4c4ca2631/426ff3a3ccb247d2a5afcbdcd35f4481 [2021-10-11 02:29:16,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:16,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:16,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:16,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:16,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:16,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e28e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16, skipping insertion in model container [2021-10-11 02:29:16,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:16,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:16,501 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_0271adb0-f82d-44f5-823a-1ef6a02bbbba/sv-benchmarks/c/loop-lit/cggmp2005_variant.i[895,908] [2021-10-11 02:29:16,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:16,519 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:16,533 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_0271adb0-f82d-44f5-823a-1ef6a02bbbba/sv-benchmarks/c/loop-lit/cggmp2005_variant.i[895,908] [2021-10-11 02:29:16,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:16,553 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:16,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16 WrapperNode [2021-10-11 02:29:16,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:16,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:16,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:16,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:16,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:16,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:16,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:16,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:16,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... [2021-10-11 02:29:16,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:16,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:16,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:16,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:16,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/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 02:29:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:16,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:16,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:16,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:16,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:16,996 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:29:16,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:16 BoogieIcfgContainer [2021-10-11 02:29:16,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:17,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:17,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:17,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:17,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:16" (1/3) ... [2021-10-11 02:29:17,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471b2bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:17, skipping insertion in model container [2021-10-11 02:29:17,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:16" (2/3) ... [2021-10-11 02:29:17,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471b2bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:17, skipping insertion in model container [2021-10-11 02:29:17,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:16" (3/3) ... [2021-10-11 02:29:17,033 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2021-10-11 02:29:17,047 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:17,065 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:29:17,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:29:17,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:17,102 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:17,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:17,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:17,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:17,102 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:17,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:17,103 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:29:17,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:17,121 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:17,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:17,122 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:17,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:17,127 INFO L82 PathProgramCache]: Analyzing trace with hash 61198179, now seen corresponding path program 1 times [2021-10-11 02:29:17,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:17,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528954861] [2021-10-11 02:29:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:17,380 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 02:29:17,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528954861] [2021-10-11 02:29:17,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:17,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:17,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843588935] [2021-10-11 02:29:17,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:17,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:17,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:17,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:17,407 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:29:17,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:17,439 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-11 02:29:17,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:17,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:29:17,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:17,454 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:29:17,454 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:29:17,457 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 02:29:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:29:17,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:29:17,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:29:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:29:17,501 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-11 02:29:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:17,502 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:29:17,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:29:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:17,503 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:17,503 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:17,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:17,504 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:17,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1896502525, now seen corresponding path program 1 times [2021-10-11 02:29:17,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:17,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081520986] [2021-10-11 02:29:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:17,650 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 02:29:17,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081520986] [2021-10-11 02:29:17,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733791756] [2021-10-11 02:29:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/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 02:29:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:17,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:29:17,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:17,913 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:29:17,933 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 02:29:17,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:18,003 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 02:29:18,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1719108194] [2021-10-11 02:29:18,026 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:29:18,027 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:18,032 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:18,039 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:18,040 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:18,533 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:18,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:18,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:18,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-11 02:29:18,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931043149] [2021-10-11 02:29:18,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:29:18,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:18,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:29:18,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:29:18,973 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 11 states. [2021-10-11 02:29:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:19,034 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-11 02:29:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:19,035 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 6 [2021-10-11 02:29:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:19,037 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:29:19,042 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:29:19,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:29:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:29:19,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:29:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:29:19,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:29:19,050 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-11 02:29:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:19,052 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:29:19,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:29:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:29:19,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:19,053 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:19,053 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:29:19,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:29:19,270 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:19,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1338604893, now seen corresponding path program 2 times [2021-10-11 02:29:19,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:19,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000520693] [2021-10-11 02:29:19,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:19,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000520693] [2021-10-11 02:29:19,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461525234] [2021-10-11 02:29:19,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:19,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:29:19,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:29:19,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 02:29:19,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:19,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:19,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1823338030] [2021-10-11 02:29:19,716 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:29:19,717 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:29:19,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:29:19,718 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:29:19,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:29:19,951 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:29:20,334 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:20,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:29:20,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-10-11 02:29:20,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350484277] [2021-10-11 02:29:20,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-10-11 02:29:20,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-11 02:29:20,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:29:20,336 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 13 states. [2021-10-11 02:29:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:20,575 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-11 02:29:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:29:20,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 7 [2021-10-11 02:29:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:20,576 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:29:20,576 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:20,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2021-10-11 02:29:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:20,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:20,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-11 02:29:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:20,580 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:20,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-10-11 02:29:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:20,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:20,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-11 02:29:20,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:20,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:20,837 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-11 02:29:20,837 INFO L265 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: true [2021-10-11 02:29:20,837 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:20,837 INFO L262 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-11 02:29:20,838 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~hi~0 .cse0))) [2021-10-11 02:29:20,838 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-11 02:29:20,838 INFO L262 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-11 02:29:20,838 INFO L265 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-10-11 02:29:20,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:20 BoogieIcfgContainer [2021-10-11 02:29:20,854 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:20,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:20,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:20,855 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:20,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:16" (3/4) ... [2021-10-11 02:29:20,858 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:20,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:29:20,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:29:20,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:20,867 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:20,903 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0271adb0-f82d-44f5-823a-1ef6a02bbbba/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:20,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:20,905 INFO L168 Benchmark]: Toolchain (without parser) took 4590.46 ms. Allocated memory was 83.9 MB in the beginning and 169.9 MB in the end (delta: 86.0 MB). Free memory was 42.5 MB in the beginning and 122.8 MB in the end (delta: -80.3 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:20,906 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 58.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:20,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.21 ms. Allocated memory was 83.9 MB in the beginning and 140.5 MB in the end (delta: 56.6 MB). Free memory was 42.3 MB in the beginning and 115.5 MB in the end (delta: -73.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:20,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.28 ms. Allocated memory is still 140.5 MB. Free memory was 115.5 MB in the beginning and 114.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:20,907 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 ms. Allocated memory is still 140.5 MB. Free memory was 114.4 MB in the beginning and 113.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:20,908 INFO L168 Benchmark]: RCFGBuilder took 388.34 ms. Allocated memory is still 140.5 MB. Free memory was 113.4 MB in the beginning and 112.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:20,909 INFO L168 Benchmark]: TraceAbstraction took 3853.44 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 112.1 MB in the beginning and 124.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:20,909 INFO L168 Benchmark]: Witness Printer took 49.50 ms. Allocated memory is still 169.9 MB. Free memory was 124.9 MB in the beginning and 122.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:20,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 58.6 MB in the beginning and 58.5 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.21 ms. Allocated memory was 83.9 MB in the beginning and 140.5 MB in the end (delta: 56.6 MB). Free memory was 42.3 MB in the beginning and 115.5 MB in the end (delta: -73.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.28 ms. Allocated memory is still 140.5 MB. Free memory was 115.5 MB in the beginning and 114.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.72 ms. Allocated memory is still 140.5 MB. Free memory was 114.4 MB in the beginning and 113.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 388.34 ms. Allocated memory is still 140.5 MB. Free memory was 113.4 MB in the beginning and 112.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3853.44 ms. Allocated memory was 140.5 MB in the beginning and 169.9 MB in the end (delta: 29.4 MB). Free memory was 112.1 MB in the beginning and 124.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Witness Printer took 49.50 ms. Allocated memory is still 169.9 MB. Free memory was 124.9 MB in the beginning and 122.8 MB in the end (delta: 2.1 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: 19]: 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (lo + 2 * mid <= hi && lo <= hi) && hi <= lo + 2 * mid - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 10 SDslu, 21 SDs, 0 SdLazy, 55 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 95 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1513 SizeOfPredicates, 10 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/12 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...