./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG --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 c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa ........................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:50:33,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:50:33,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:50:33,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:50:33,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:50:33,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:50:33,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:50:33,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:50:33,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:50:33,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:50:33,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:50:33,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:50:33,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:50:33,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:50:33,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:50:33,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:50:33,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:50:33,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:50:33,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:50:33,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:50:33,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:50:33,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:50:33,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:50:33,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:50:33,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:50:33,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:50:33,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:50:33,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:50:33,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:50:33,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:50:33,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:50:33,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:50:33,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:50:33,663 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:50:33,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:50:33,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:50:33,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:50:33,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:50:33,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:50:33,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:50:33,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:50:33,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:50:33,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:50:33,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:50:33,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:50:33,724 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:50:33,724 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:50:33,724 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:50:33,725 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:50:33,725 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:50:33,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:50:33,726 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:50:33,727 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:50:33,727 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:50:33,728 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:50:33,728 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:50:33,728 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:50:33,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:50:33,730 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:50:33,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:50:33,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:50:33,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:50:33,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:50:33,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:50:33,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:50:33,732 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:50:33,732 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:50:33,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:50:33,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:50:33,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:50:33,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:50:33,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:50:33,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:50:33,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:50:33,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:50:33,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:50:33,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:50:33,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:50:33,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:50:33,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:50:33,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:50:33,738 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_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa [2021-10-29 05:50:34,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:50:34,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:50:34,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:50:34,042 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:50:34,042 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:50:34,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-10-29 05:50:34,117 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/data/a6bd99282/49eb5cfd529042f3bf3884e9fdcd1f84/FLAG1f0ed3f13 [2021-10-29 05:50:34,522 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:50:34,523 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2021-10-29 05:50:34,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/data/a6bd99282/49eb5cfd529042f3bf3884e9fdcd1f84/FLAG1f0ed3f13 [2021-10-29 05:50:34,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/data/a6bd99282/49eb5cfd529042f3bf3884e9fdcd1f84 [2021-10-29 05:50:34,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:50:34,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:50:34,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:50:34,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:50:34,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:50:34,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:50:34" (1/1) ... [2021-10-29 05:50:34,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dcf3162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:34, skipping insertion in model container [2021-10-29 05:50:34,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:50:34" (1/1) ... [2021-10-29 05:50:34,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:50:34,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:50:35,147 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_7130c56a-d6a3-4982-81c9-bf4c47730319/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2021-10-29 05:50:35,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:50:35,172 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:50:35,183 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_7130c56a-d6a3-4982-81c9-bf4c47730319/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2021-10-29 05:50:35,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:50:35,206 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:50:35,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35 WrapperNode [2021-10-29 05:50:35,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:50:35,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:50:35,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:50:35,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:50:35,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:50:35,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:50:35,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:50:35,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:50:35,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:50:35,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:50:35,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:50:35,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:50:35,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (1/1) ... [2021-10-29 05:50:35,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:50:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:50:35,330 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:50:35,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:50:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:50:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:50:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:50:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:50:35,980 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:50:35,980 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-29 05:50:35,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:50:35 BoogieIcfgContainer [2021-10-29 05:50:35,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:50:35,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:50:35,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:50:35,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:50:35,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:50:34" (1/3) ... [2021-10-29 05:50:35,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7958aa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:50:35, skipping insertion in model container [2021-10-29 05:50:35,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:50:35" (2/3) ... [2021-10-29 05:50:35,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7958aa39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:50:35, skipping insertion in model container [2021-10-29 05:50:35,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:50:35" (3/3) ... [2021-10-29 05:50:35,991 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2021-10-29 05:50:35,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:50:35,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:50:36,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:50:36,061 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:50:36,061 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:50:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:50:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:50:36,080 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:50:36,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:50:36,081 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:50:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:50:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash 4262196, now seen corresponding path program 1 times [2021-10-29 05:50:36,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:50:36,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106877060] [2021-10-29 05:50:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:50:36,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:50:36,211 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:50:36,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422357203] [2021-10-29 05:50:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:50:36,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:50:36,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:50:36,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:50:36,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:50:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:50:36,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-29 05:50:36,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:50:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:50:36,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:50:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:50:36,710 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:50:36,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106877060] [2021-10-29 05:50:36,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:50:36,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422357203] [2021-10-29 05:50:36,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422357203] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:50:36,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:50:36,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:50:36,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808044204] [2021-10-29 05:50:36,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:50:36,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:50:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:50:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:50:36,741 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-29 05:50:36,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:50:36,915 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-10-29 05:50:36,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:50:36,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 4 [2021-10-29 05:50:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:50:36,929 INFO L225 Difference]: With dead ends: 42 [2021-10-29 05:50:36,929 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:50:36,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:50:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:50:36,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 12. [2021-10-29 05:50:36,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:50:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 05:50:36,967 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2021-10-29 05:50:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:50:36,967 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 05:50:36,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-29 05:50:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 05:50:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:50:36,969 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:50:36,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:50:37,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:50:37,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:50:37,185 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:50:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:50:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1869015282, now seen corresponding path program 1 times [2021-10-29 05:50:37,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:50:37,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013649717] [2021-10-29 05:50:37,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:50:37,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:50:37,216 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:50:37,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541442886] [2021-10-29 05:50:37,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:50:37,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:50:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:50:37,218 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:50:37,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:50:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:50:37,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-29 05:50:37,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:50:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:50:37,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:50:37,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:50:37,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:50:37,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013649717] [2021-10-29 05:50:37,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:50:37,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541442886] [2021-10-29 05:50:37,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541442886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:50:37,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:50:37,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:50:37,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432959828] [2021-10-29 05:50:37,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:50:37,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:50:37,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:50:37,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:50:37,981 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:50:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:50:38,423 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-29 05:50:38,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:50:38,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 7 [2021-10-29 05:50:38,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:50:38,426 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:50:38,426 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:50:38,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:50:38,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:50:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 10. [2021-10-29 05:50:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:50:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-29 05:50:38,431 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-29 05:50:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:50:38,432 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-29 05:50:38,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:50:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-29 05:50:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:50:38,433 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:50:38,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:50:38,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:50:38,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-29 05:50:38,634 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:50:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:50:38,635 INFO L85 PathProgramCache]: Analyzing trace with hash -827198959, now seen corresponding path program 1 times [2021-10-29 05:50:38,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:50:38,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203225542] [2021-10-29 05:50:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:50:38,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:50:38,652 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:50:38,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903254460] [2021-10-29 05:50:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:50:38,653 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:50:38,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:50:38,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:50:38,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:50:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:50:38,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:50:38,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:50:38,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:50:38,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:50:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:50:38,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:50:38,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203225542] [2021-10-29 05:50:38,895 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:50:38,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903254460] [2021-10-29 05:50:38,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903254460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:50:38,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:50:38,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:50:38,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640529201] [2021-10-29 05:50:38,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:50:38,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:50:38,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:50:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:50:38,902 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-29 05:50:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:50:38,969 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-29 05:50:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:50:38,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 9 [2021-10-29 05:50:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:50:38,970 INFO L225 Difference]: With dead ends: 17 [2021-10-29 05:50:38,970 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:50:38,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:50:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:50:38,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:50:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:50:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:50:38,975 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-29 05:50:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:50:38,975 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:50:38,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2021-10-29 05:50:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:50:38,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:50:38,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:50:38,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:50:38,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:50:39,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:50:39,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:50:39,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:50:39,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:50:39,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:50:39,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:50:39,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:50:39,614 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:50:39,614 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:50:39,614 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:50:39,615 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-29 05:50:39,615 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 37 38) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)))) [2021-10-29 05:50:39,615 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-29 05:50:39,615 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 0) (= ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) [2021-10-29 05:50:39,615 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-29 05:50:39,616 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) [2021-10-29 05:50:39,616 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:50:39,616 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-29 05:50:39,616 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-29 05:50:39,616 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-29 05:50:39,616 INFO L857 garLoopResultBuilder]: For program point L34-2(lines 34 55) no Hoare annotation was computed. [2021-10-29 05:50:39,617 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:50:39,617 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))))) [2021-10-29 05:50:39,621 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:50:39,622 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:50:39,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:50:39 BoogieIcfgContainer [2021-10-29 05:50:39,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:50:39,644 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:50:39,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:50:39,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:50:39,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:50:35" (3/4) ... [2021-10-29 05:50:39,648 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:50:39,664 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-29 05:50:39,664 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-29 05:50:39,665 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:50:39,665 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:50:39,731 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:50:39,732 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:50:39,733 INFO L168 Benchmark]: Toolchain (without parser) took 4796.66 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 71.7 MB in the beginning and 80.4 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:39,734 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 58.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:50:39,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.43 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 71.4 MB in the beginning and 103.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:39,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 127.9 MB. Free memory was 103.3 MB in the beginning and 101.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:39,738 INFO L168 Benchmark]: Boogie Preprocessor took 25.82 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 100.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:39,738 INFO L168 Benchmark]: RCFGBuilder took 709.66 ms. Allocated memory is still 127.9 MB. Free memory was 100.4 MB in the beginning and 80.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:39,738 INFO L168 Benchmark]: TraceAbstraction took 3657.58 ms. Allocated memory is still 127.9 MB. Free memory was 80.2 MB in the beginning and 83.5 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:50:39,739 INFO L168 Benchmark]: Witness Printer took 87.79 ms. Allocated memory is still 127.9 MB. Free memory was 83.5 MB in the beginning and 80.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:50:39,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 58.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.43 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 71.4 MB in the beginning and 103.3 MB in the end (delta: -31.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 127.9 MB. Free memory was 103.3 MB in the beginning and 101.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.82 ms. Allocated memory is still 127.9 MB. Free memory was 101.8 MB in the beginning and 100.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 709.66 ms. Allocated memory is still 127.9 MB. Free memory was 100.4 MB in the beginning and 80.8 MB in the end (delta: 19.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3657.58 ms. Allocated memory is still 127.9 MB. Free memory was 80.2 MB in the beginning and 83.5 MB in the end (delta: -3.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 87.79 ms. Allocated memory is still 127.9 MB. Free memory was 83.5 MB in the beginning and 80.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 66 SDslu, 23 SDs, 0 SdLazy, 73 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 78 HoareAnnotationTreeSize, 4 FomulaSimplifications, 188 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 660 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 1 QuantifiedInterpolants, 311 SizeOfPredicates, 28 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 <= cond && x * y == q + a * p * b - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x * y == q + a * p * b - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((a == x && x <= 1) && p == 1) && 1 <= b) && q == 0) && 0 <= x) && y <= 1) && b == y) || (1 <= cond && x * y == q + a * p * b) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && a * b == 0) && q == x * y RESULT: Ultimate proved your program to be correct! [2021-10-29 05:50:39,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7130c56a-d6a3-4982-81c9-bf4c47730319/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...