./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw --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 199c7a46b756091bf3eb8b2dd1ac46d4cc123e50a50bc65aad9ff531c4b58043 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:24:14,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:24:14,153 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:24:14,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:24:14,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:24:14,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:24:14,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:24:14,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:24:14,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:24:14,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:24:14,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:24:14,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:24:14,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:24:14,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:24:14,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:24:14,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:24:14,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:24:14,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:24:14,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:24:14,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:24:14,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:24:14,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:24:14,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:24:14,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:24:14,221 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:24:14,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:24:14,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:24:14,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:24:14,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:24:14,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:24:14,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:24:14,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:24:14,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:24:14,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:24:14,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:24:14,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:24:14,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:24:14,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:24:14,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:24:14,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:24:14,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:24:14,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:24:14,296 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:24:14,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:24:14,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:24:14,299 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:24:14,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:24:14,300 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:24:14,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:24:14,300 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:24:14,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:24:14,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:24:14,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:24:14,302 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:24:14,303 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:24:14,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:24:14,303 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:24:14,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:24:14,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:24:14,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:24:14,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:24:14,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:24:14,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:24:14,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:24:14,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:24:14,305 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:24:14,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:24:14,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:24:14,306 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:24:14,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:24:14,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:24:14,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:24:14,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:24:14,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:24:14,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:24:14,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:24:14,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:24:14,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:24:14,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:24:14,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:24:14,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:24:14,310 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_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199c7a46b756091bf3eb8b2dd1ac46d4cc123e50a50bc65aad9ff531c4b58043 [2021-10-20 06:24:14,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:24:14,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:24:14,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:24:14,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:24:14,610 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:24:14,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2021-10-20 06:24:14,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/data/354419dff/16c4b19d2c754153ab9447877782762e/FLAGd0b86f2cc [2021-10-20 06:24:15,084 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:24:15,085 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2021-10-20 06:24:15,093 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/data/354419dff/16c4b19d2c754153ab9447877782762e/FLAGd0b86f2cc [2021-10-20 06:24:15,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/data/354419dff/16c4b19d2c754153ab9447877782762e [2021-10-20 06:24:15,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:24:15,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:24:15,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:24:15,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:24:15,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:24:15,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,511 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3ec612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15, skipping insertion in model container [2021-10-20 06:24:15,511 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:24:15,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:24:15,696 WARN L228 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_dbcc419e-52fa-41f7-b694-c933d37ec688/sv-benchmarks/c/loop-crafted/simple_vardep_1.c[584,597] [2021-10-20 06:24:15,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:24:15,713 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:24:15,724 WARN L228 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_dbcc419e-52fa-41f7-b694-c933d37ec688/sv-benchmarks/c/loop-crafted/simple_vardep_1.c[584,597] [2021-10-20 06:24:15,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:24:15,739 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:24:15,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15 WrapperNode [2021-10-20 06:24:15,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:24:15,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:24:15,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:24:15,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:24:15,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:24:15,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:24:15,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:24:15,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:24:15,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:24:15,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:24:15,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:24:15,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:24:15,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (1/1) ... [2021-10-20 06:24:15,812 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:24:15,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:24:15,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:24:15,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:24:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:24:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:24:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:24:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:24:16,094 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:24:16,095 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 06:24:16,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:16 BoogieIcfgContainer [2021-10-20 06:24:16,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:24:16,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:24:16,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:24:16,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:24:16,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:24:15" (1/3) ... [2021-10-20 06:24:16,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c30503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:24:16, skipping insertion in model container [2021-10-20 06:24:16,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:24:15" (2/3) ... [2021-10-20 06:24:16,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c30503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:24:16, skipping insertion in model container [2021-10-20 06:24:16,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:16" (3/3) ... [2021-10-20 06:24:16,120 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2021-10-20 06:24:16,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:24:16,142 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:24:16,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:24:16,225 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:24:16,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:24:16,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:16,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 06:24:16,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:24:16,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 06:24:16,246 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:24:16,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:24:16,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1738899, now seen corresponding path program 1 times [2021-10-20 06:24:16,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:24:16,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495315242] [2021-10-20 06:24:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:24:16,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:24:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:24:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:24:16,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:24:16,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495315242] [2021-10-20 06:24:16,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495315242] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:24:16,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:24:16,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:24:16,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328466846] [2021-10-20 06:24:16,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:24:16,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:24:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:24:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:24:16,595 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:24:16,628 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2021-10-20 06:24:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:24:16,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-20 06:24:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:24:16,637 INFO L225 Difference]: With dead ends: 13 [2021-10-20 06:24:16,637 INFO L226 Difference]: Without dead ends: 7 [2021-10-20 06:24:16,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:24:16,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-20 06:24:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-20 06:24:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-20 06:24:16,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2021-10-20 06:24:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:24:16,670 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-20 06:24:16,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-20 06:24:16,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 06:24:16,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:24:16,671 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-20 06:24:16,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:24:16,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:24:16,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:24:16,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1671226539, now seen corresponding path program 1 times [2021-10-20 06:24:16,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:24:16,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699038646] [2021-10-20 06:24:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:24:16,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:24:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:24:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:24:16,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:24:16,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699038646] [2021-10-20 06:24:16,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699038646] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:24:16,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258223429] [2021-10-20 06:24:16,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:24:16,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:24:16,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:24:16,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:24:16,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:24:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:24:17,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-20 06:24:17,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:24:17,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:24:17,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:24:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:24:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258223429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:24:17,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1989700720] [2021-10-20 06:24:17,796 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-20 06:24:17,797 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:24:17,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:24:17,811 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:24:17,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:24:17,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:17,857 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:24:17,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:17,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:24:17,860 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:24:17,860 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:17,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 06:24:17,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-20 06:24:17,885 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-20 06:24:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-20 06:24:17,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:17,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:24:17,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:17,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:24:17,919 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:24:17,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:17,967 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:17,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:17,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:18,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:24:18,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-20 06:24:18,006 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:18,010 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:24:18,011 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:18,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:24:18,013 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:24:18,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:18,036 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:18,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-20 06:24:18,040 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:24:18,041 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:125, output treesize:100 [2021-10-20 06:24:18,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:24:18,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-10-20 06:24:18,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,195 INFO L180 QuantifierPusher]: treesize reduction 30, result has 74.8 percent of original size [2021-10-20 06:24:18,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-20 06:24:18,216 INFO L180 QuantifierPusher]: treesize reduction 30, result has 74.8 percent of original size [2021-10-20 06:24:18,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-20 06:24:18,229 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:24:18,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:24:18,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:24:18,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2021-10-20 06:24:18,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926962616] [2021-10-20 06:24:18,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-20 06:24:18,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:24:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-20 06:24:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-20 06:24:18,538 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:24:18,579 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-20 06:24:18,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:24:18,580 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-20 06:24:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:24:18,580 INFO L225 Difference]: With dead ends: 8 [2021-10-20 06:24:18,580 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:24:18,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 708.4ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-20 06:24:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:24:18,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:24:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:24:18,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-20 06:24:18,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:24:18,582 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:24:18,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:24:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:24:18,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:24:18,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:24:18,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:24:18,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:24:18,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:24:18,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:24:18,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:24:18,850 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-20 06:24:18,850 INFO L853 garLoopResultBuilder]: At program point L9-2(lines 7 27) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0 (* 4294967296 (div ULTIMATE.start_main_~k~0 4294967296))) (+ (* 4294967296 (div (+ ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0) 4294967296)) ULTIMATE.start_main_~k~0)))) [2021-10-20 06:24:18,852 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:24:18,852 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-10-20 06:24:18,852 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-20 06:24:18,857 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:24:18,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:24:18 BoogieIcfgContainer [2021-10-20 06:24:18,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:24:18,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:24:18,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:24:18,880 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:24:18,881 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:24:16" (3/4) ... [2021-10-20 06:24:18,884 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:24:18,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-20 06:24:18,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-20 06:24:18,893 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 06:24:18,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:24:18,932 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:24:18,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:24:18,933 INFO L168 Benchmark]: Toolchain (without parser) took 3442.06 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 51.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:24:18,933 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 81.8 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:24:18,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.22 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.2 MB in the beginning and 76.1 MB in the end (delta: -30.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:24:18,935 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.44 ms. Allocated memory is still 98.6 MB. Free memory was 76.1 MB in the beginning and 74.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:24:18,935 INFO L168 Benchmark]: Boogie Preprocessor took 20.61 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.7 MB in the end (delta: 909.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:24:18,936 INFO L168 Benchmark]: RCFGBuilder took 295.39 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 64.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:24:18,936 INFO L168 Benchmark]: TraceAbstraction took 2779.39 ms. Allocated memory is still 98.6 MB. Free memory was 63.5 MB in the beginning and 54.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:24:18,937 INFO L168 Benchmark]: Witness Printer took 52.47 ms. Allocated memory is still 98.6 MB. Free memory was 54.0 MB in the beginning and 51.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:24:18,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 81.8 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.22 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 45.2 MB in the beginning and 76.1 MB in the end (delta: -30.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.44 ms. Allocated memory is still 98.6 MB. Free memory was 76.1 MB in the beginning and 74.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.61 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.7 MB in the end (delta: 909.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 295.39 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 64.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2779.39 ms. Allocated memory is still 98.6 MB. Free memory was 63.5 MB in the beginning and 54.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 52.47 ms. Allocated memory is still 98.6 MB. Free memory was 54.0 MB in the beginning and 51.9 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2640.2ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 10.7ms, AutomataDifference: 103.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 40.7ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 6 SDs, 0 SdLazy, 19 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 745.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=1, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 33 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 9.6ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 25.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 21.7ms SsaConstructionTime, 153.0ms SatisfiabilityAnalysisTime, 1128.1ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 148 SizeOfPredicates, 6 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 1/6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((k == 0 && i == 0) && j == 0) || (1 <= cond && j + i + 4294967296 * (k / 4294967296) == 4294967296 * ((j + i) / 4294967296) + k) RESULT: Ultimate proved your program to be correct! [2021-10-20 06:24:18,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbcc419e-52fa-41f7-b694-c933d37ec688/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...