./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH --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 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:40:45,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:40:45,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:40:45,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:40:45,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:40:45,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:40:45,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:40:45,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:40:45,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:40:45,502 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:40:45,503 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:40:45,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:40:45,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:40:45,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:40:45,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:40:45,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:40:45,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:40:45,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:40:45,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:40:45,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:40:45,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:40:45,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:40:45,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:40:45,535 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:40:45,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:40:45,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:40:45,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:40:45,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:40:45,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:40:45,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:40:45,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:40:45,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:40:45,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:40:45,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:40:45,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:40:45,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:40:45,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:40:45,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:40:45,557 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:40:45,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:40:45,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:40:45,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:40:45,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:40:45,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:40:45,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:40:45,605 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:40:45,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:40:45,606 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:40:45,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:40:45,606 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:40:45,613 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:40:45,613 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:40:45,614 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:40:45,615 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:40:45,615 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:40:45,615 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:40:45,616 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:40:45,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:40:45,617 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:40:45,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:40:45,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:40:45,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:40:45,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:40:45,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:40:45,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:40:45,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:40:45,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:40:45,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:40:45,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:40:45,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:40:45,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:40:45,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:40:45,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:45,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:40:45,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:40:45,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:40:45,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:40:45,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:40:45,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:40:45,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:40:45,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:40:45,624 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_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c [2021-11-03 04:40:45,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:40:45,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:40:45,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:40:45,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:40:45,988 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:40:45,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-03 04:40:46,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/7ef12511d/88c8885a2f7445c3a349eb86bfe41f6b/FLAGff79a5c75 [2021-11-03 04:40:46,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:40:46,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-03 04:40:46,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/7ef12511d/88c8885a2f7445c3a349eb86bfe41f6b/FLAGff79a5c75 [2021-11-03 04:40:46,946 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/7ef12511d/88c8885a2f7445c3a349eb86bfe41f6b [2021-11-03 04:40:46,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:40:46,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:40:46,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:46,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:40:46,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:40:46,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:46" (1/1) ... [2021-11-03 04:40:46,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca6c89d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:46, skipping insertion in model container [2021-11-03 04:40:46,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:46" (1/1) ... [2021-11-03 04:40:46,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:40:46,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:40:47,186 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_35a2b164-6279-444b-a96f-00ca376a654f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-03 04:40:47,218 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:47,232 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:40:47,248 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_35a2b164-6279-444b-a96f-00ca376a654f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-03 04:40:47,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:47,291 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:40:47,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47 WrapperNode [2021-11-03 04:40:47,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:47,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:40:47,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:40:47,293 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:40:47,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:40:47,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:40:47,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:40:47,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:40:47,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:40:47,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:40:47,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:40:47,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:40:47,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (1/1) ... [2021-11-03 04:40:47,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:47,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:47,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:40:47,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:40:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:40:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:40:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:40:47,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:40:47,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:40:47,756 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-03 04:40:47,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:40:47 BoogieIcfgContainer [2021-11-03 04:40:47,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:40:47,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:40:47,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:40:47,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:40:47,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:40:46" (1/3) ... [2021-11-03 04:40:47,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309454d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:40:47, skipping insertion in model container [2021-11-03 04:40:47,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:47" (2/3) ... [2021-11-03 04:40:47,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@309454d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:40:47, skipping insertion in model container [2021-11-03 04:40:47,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:40:47" (3/3) ... [2021-11-03 04:40:47,767 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-11-03 04:40:47,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:40:47,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:40:47,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:40:47,863 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 [2021-11-03 04:40:47,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:40:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 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) [2021-11-03 04:40:47,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:40:47,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:47,884 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:40:47,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:40:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash 114241630, now seen corresponding path program 1 times [2021-11-03 04:40:47,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:40:47,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982124005] [2021-11-03 04:40:47,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:47,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:40:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:40:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:40:48,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:40:48,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982124005] [2021-11-03 04:40:48,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982124005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:40:48,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:40:48,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:40:48,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805575131] [2021-11-03 04:40:48,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:40:48,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:40:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:40:48,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:40:48,106 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-03 04:40:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:40:48,123 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-11-03 04:40:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:40:48,125 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-03 04:40:48,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:40:48,135 INFO L225 Difference]: With dead ends: 57 [2021-11-03 04:40:48,135 INFO L226 Difference]: Without dead ends: 27 [2021-11-03 04:40:48,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:40:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-03 04:40:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-03 04:40:48,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 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) [2021-11-03 04:40:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-03 04:40:48,174 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-11-03 04:40:48,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:40:48,175 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-03 04:40:48,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-03 04:40:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-03 04:40:48,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 04:40:48,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:40:48,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 04:40:48,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:40:48,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:40:48,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:40:48,181 INFO L85 PathProgramCache]: Analyzing trace with hash 112890113, now seen corresponding path program 1 times [2021-11-03 04:40:48,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:40:48,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600676443] [2021-11-03 04:40:48,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:48,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:40:48,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:40:48,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608281133] [2021-11-03 04:40:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:40:48,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:40:48,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:48,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:40:48,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:40:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:40:48,285 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:40:48,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:40:48,325 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:40:48,326 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:40:48,327 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:40:48,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:40:48,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:40:48,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:40:48,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:40:48,330 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:40:48,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:40:48,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-03 04:40:48,559 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-03 04:40:48,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:40:48,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:40:48 BoogieIcfgContainer [2021-11-03 04:40:48,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:40:48,583 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:40:48,583 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:40:48,588 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:40:48,588 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:40:47" (3/4) ... [2021-11-03 04:40:48,591 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 04:40:48,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:40:48,593 INFO L168 Benchmark]: Toolchain (without parser) took 1642.75 ms. Allocated memory is still 134.2 MB. Free memory was 97.7 MB in the beginning and 67.2 MB in the end (delta: 30.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:48,594 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 134.2 MB. Free memory was 104.7 MB in the beginning and 104.6 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:40:48,595 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.26 ms. Allocated memory is still 134.2 MB. Free memory was 97.5 MB in the beginning and 107.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:48,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.01 ms. Allocated memory is still 134.2 MB. Free memory was 107.1 MB in the beginning and 105.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:48,603 INFO L168 Benchmark]: Boogie Preprocessor took 45.81 ms. Allocated memory is still 134.2 MB. Free memory was 105.5 MB in the beginning and 104.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:40:48,604 INFO L168 Benchmark]: RCFGBuilder took 364.99 ms. Allocated memory is still 134.2 MB. Free memory was 104.2 MB in the beginning and 92.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:48,604 INFO L168 Benchmark]: TraceAbstraction took 822.24 ms. Allocated memory is still 134.2 MB. Free memory was 92.4 MB in the beginning and 67.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:40:48,605 INFO L168 Benchmark]: Witness Printer took 8.12 ms. Allocated memory is still 134.2 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:40:48,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 134.2 MB. Free memory was 104.7 MB in the beginning and 104.6 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.26 ms. Allocated memory is still 134.2 MB. Free memory was 97.5 MB in the beginning and 107.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.01 ms. Allocated memory is still 134.2 MB. Free memory was 107.1 MB in the beginning and 105.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.81 ms. Allocated memory is still 134.2 MB. Free memory was 105.5 MB in the beginning and 104.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 364.99 ms. Allocated memory is still 134.2 MB. Free memory was 104.2 MB in the beginning and 92.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 822.24 ms. Allocated memory is still 134.2 MB. Free memory was 92.4 MB in the beginning and 67.9 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 8.12 ms. Allocated memory is still 134.2 MB. Free memory is still 67.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-11-03 04:40:48,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH --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 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:40:50,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:40:50,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:40:50,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:40:50,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:40:50,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:40:50,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:40:51,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:40:51,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:40:51,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:40:51,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:40:51,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:40:51,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:40:51,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:40:51,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:40:51,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:40:51,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:40:51,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:40:51,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:40:51,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:40:51,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:40:51,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:40:51,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:40:51,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:40:51,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:40:51,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:40:51,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:40:51,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:40:51,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:40:51,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:40:51,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:40:51,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:40:51,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:40:51,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:40:51,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:40:51,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:40:51,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:40:51,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:40:51,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:40:51,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:40:51,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:40:51,088 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 04:40:51,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:40:51,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:40:51,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:40:51,136 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:40:51,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:40:51,136 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:40:51,136 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:40:51,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:40:51,137 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:40:51,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:40:51,139 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:40:51,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:40:51,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:40:51,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:40:51,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:40:51,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:40:51,141 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:40:51,141 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 04:40:51,141 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 04:40:51,141 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:40:51,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:40:51,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:40:51,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:40:51,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:40:51,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 04:40:51,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:40:51,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:51,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:40:51,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:40:51,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:40:51,144 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 04:40:51,144 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 04:40:51,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:40:51,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:40:51,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:40:51,145 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c94686873332081feb3318888667bc0ece98ccb66d8096416ad72e068ccd16c [2021-11-03 04:40:51,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:40:51,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:40:51,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:40:51,590 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:40:51,591 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:40:51,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-03 04:40:51,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/8fe319117/a3df0fea61dd441c8584e7f5bcad2c42/FLAG94745953b [2021-11-03 04:40:52,216 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:40:52,216 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2021-11-03 04:40:52,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/8fe319117/a3df0fea61dd441c8584e7f5bcad2c42/FLAG94745953b [2021-11-03 04:40:52,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/data/8fe319117/a3df0fea61dd441c8584e7f5bcad2c42 [2021-11-03 04:40:52,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:40:52,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:40:52,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:52,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:40:52,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:40:52,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381a2e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52, skipping insertion in model container [2021-11-03 04:40:52,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:40:52,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:40:52,770 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_35a2b164-6279-444b-a96f-00ca376a654f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-03 04:40:52,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:52,807 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:40:52,826 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_35a2b164-6279-444b-a96f-00ca376a654f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2021-11-03 04:40:52,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:40:52,876 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:40:52,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52 WrapperNode [2021-11-03 04:40:52,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:40:52,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:40:52,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:40:52,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:40:52,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:40:52,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:40:52,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:40:52,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:40:52,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:40:52,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:40:52,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:40:52,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:40:52,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (1/1) ... [2021-11-03 04:40:52,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:40:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:40:52,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:40:52,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:40:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 04:40:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:40:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:40:53,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:41:04,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:41:04,428 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-03 04:41:04,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:41:04 BoogieIcfgContainer [2021-11-03 04:41:04,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:41:04,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:41:04,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:41:04,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:41:04,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:40:52" (1/3) ... [2021-11-03 04:41:04,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e4cc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:41:04, skipping insertion in model container [2021-11-03 04:41:04,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:40:52" (2/3) ... [2021-11-03 04:41:04,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19e4cc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:41:04, skipping insertion in model container [2021-11-03 04:41:04,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:41:04" (3/3) ... [2021-11-03 04:41:04,439 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2021-11-03 04:41:04,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:41:04,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:41:04,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:41:04,492 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 [2021-11-03 04:41:04,493 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:41:04,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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) [2021-11-03 04:41:04,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:41:04,530 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:04,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:41:04,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:41:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:04,537 INFO L85 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-11-03 04:41:04,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:04,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878887475] [2021-11-03 04:41:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:04,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:04,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:04,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:41:04,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:04,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:41:04,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:04,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:04,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:04,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878887475] [2021-11-03 04:41:04,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878887475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:04,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:04,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:41:04,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190876637] [2021-11-03 04:41:04,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:41:04,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:04,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:41:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:41:04,862 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-03 04:41:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:04,878 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-11-03 04:41:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:41:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 [2021-11-03 04:41:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:04,888 INFO L225 Difference]: With dead ends: 62 [2021-11-03 04:41:04,888 INFO L226 Difference]: Without dead ends: 28 [2021-11-03 04:41:04,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:41:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-03 04:41:04,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-03 04:41:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 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) [2021-11-03 04:41:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-03 04:41:04,915 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-11-03 04:41:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:04,915 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-03 04:41:04,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-03 04:41:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-03 04:41:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:41:04,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:04,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:41:04,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:05,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:05,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:41:05,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-03 04:41:05,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:05,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699506904] [2021-11-03 04:41:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:05,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:05,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:05,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:05,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:41:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:05,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:41:05,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:05,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:12,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:12,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:41:12,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699506904] [2021-11-03 04:41:12,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699506904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:12,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:12,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-03 04:41:12,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103996564] [2021-11-03 04:41:12,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:41:12,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:41:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:41:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:41:12,570 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-11-03 04:41:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:31,461 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-03 04:41:31,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:41:31,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 [2021-11-03 04:41:31,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:31,463 INFO L225 Difference]: With dead ends: 39 [2021-11-03 04:41:31,463 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 04:41:31,464 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-03 04:41:31,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 04:41:31,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-03 04:41:31,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-11-03 04:41:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-03 04:41:31,469 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-11-03 04:41:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:31,469 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-03 04:41:31,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-11-03 04:41:31,469 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-03 04:41:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:41:31,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:31,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:31,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:31,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:41:31,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:41:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-11-03 04:41:31,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:41:31,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615698760] [2021-11-03 04:41:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:31,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:41:31,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:41:31,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:41:31,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:41:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:32,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-03 04:41:32,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:35,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:41,237 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-11-03 04:41:43,272 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-11-03 04:42:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:42:05,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:42:05,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615698760] [2021-11-03 04:42:05,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615698760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:42:05,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:42:05,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-03 04:42:05,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512300302] [2021-11-03 04:42:05,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:42:05,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:42:05,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:42:05,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=29, Unknown=3, NotChecked=10, Total=56 [2021-11-03 04:42:05,548 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-03 04:42:13,550 WARN L207 SmtUtils]: Spent 5.00 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-03 04:42:18,155 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-11-03 04:42:21,343 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-03 04:43:13,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:13,476 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-11-03 04:43:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:43:13,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 8 [2021-11-03 04:43:13,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:13,477 INFO L225 Difference]: With dead ends: 36 [2021-11-03 04:43:13,477 INFO L226 Difference]: Without dead ends: 33 [2021-11-03 04:43:13,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=26, Invalid=53, Unknown=5, NotChecked=48, Total=132 [2021-11-03 04:43:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-03 04:43:13,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-11-03 04:43:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 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) [2021-11-03 04:43:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-03 04:43:13,485 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-11-03 04:43:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:13,485 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-03 04:43:13,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-11-03 04:43:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-03 04:43:13,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:43:13,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:13,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:13,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 04:43:13,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:43:13,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:43:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-11-03 04:43:13,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:43:13,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133844491] [2021-11-03 04:43:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:13,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:43:13,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:43:13,712 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:43:13,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:43:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:43:14,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 04:43:14,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:43:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:14,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:43:14,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:43:14,393 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:43:14,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133844491] [2021-11-03 04:43:14,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133844491] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:43:14,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:43:14,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 04:43:14,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159226762] [2021-11-03 04:43:14,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 04:43:14,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:43:14,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 04:43:14,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 04:43:14,396 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-03 04:43:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:43:15,516 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-11-03 04:43:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:43:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 9 [2021-11-03 04:43:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:43:15,518 INFO L225 Difference]: With dead ends: 64 [2021-11-03 04:43:15,518 INFO L226 Difference]: Without dead ends: 50 [2021-11-03 04:43:15,519 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-03 04:43:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-03 04:43:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-11-03 04:43:15,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 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) [2021-11-03 04:43:15,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-03 04:43:15,528 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-11-03 04:43:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:43:15,528 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-03 04:43:15,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-03 04:43:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-03 04:43:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:43:15,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:43:15,529 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:43:15,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:15,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:43:15,730 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-03 04:43:15,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:43:15,731 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-11-03 04:43:15,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:43:15,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279993162] [2021-11-03 04:43:15,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:43:15,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:43:15,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:43:15,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:43:15,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:43:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:43:17,157 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:43:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:43:19,150 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-03 04:43:19,151 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:43:19,152 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:19,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:19,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:19,154 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:19,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:19,155 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 04:43:19,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:43:19,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:43:19,358 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-03 04:43:19,362 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:43:19,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:43:19 BoogieIcfgContainer [2021-11-03 04:43:19,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:43:19,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:43:19,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:43:19,388 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:43:19,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:41:04" (3/4) ... [2021-11-03 04:43:19,390 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 04:43:19,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:43:19,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:43:19,439 INFO L168 Benchmark]: Toolchain (without parser) took 146852.50 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 29.6 MB in the beginning and 31.9 MB in the end (delta: -2.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-11-03 04:43:19,441 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:43:19,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.66 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 29.4 MB in the beginning and 58.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-11-03 04:43:19,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 75.5 MB. Free memory was 58.4 MB in the beginning and 56.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:43:19,445 INFO L168 Benchmark]: Boogie Preprocessor took 28.52 ms. Allocated memory is still 75.5 MB. Free memory was 56.5 MB in the beginning and 55.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:43:19,445 INFO L168 Benchmark]: RCFGBuilder took 11479.44 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 43.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:43:19,449 INFO L168 Benchmark]: TraceAbstraction took 134954.85 ms. Allocated memory is still 75.5 MB. Free memory was 43.2 MB in the beginning and 34.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:43:19,450 INFO L168 Benchmark]: Witness Printer took 50.65 ms. Allocated memory is still 75.5 MB. Free memory was 33.5 MB in the beginning and 31.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:43:19,452 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.66 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 29.4 MB in the beginning and 58.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.42 ms. Allocated memory is still 75.5 MB. Free memory was 58.4 MB in the beginning and 56.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.52 ms. Allocated memory is still 75.5 MB. Free memory was 56.5 MB in the beginning and 55.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11479.44 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 43.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 134954.85 ms. Allocated memory is still 75.5 MB. Free memory was 43.2 MB in the beginning and 34.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 50.65 ms. Allocated memory is still 75.5 MB. Free memory was 33.5 MB in the beginning and 31.9 MB in the end (delta: 1.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 134.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 88.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 68 SDslu, 171 SDs, 0 SdLazy, 110 SolverSat, 21 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 71.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 21, 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, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 40.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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 incorrect! [2021-11-03 04:43:19,667 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-03 04:43:19,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35a2b164-6279-444b-a96f-00ca376a654f/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE