./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7 --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 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:32:03,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:32:03,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:32:03,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:32:03,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:32:03,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:32:03,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:32:03,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:32:03,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:32:03,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:32:03,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:32:03,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:32:03,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:32:03,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:32:03,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:32:03,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:32:03,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:32:03,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:32:03,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:32:03,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:32:03,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:32:03,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:32:03,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:32:03,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:32:03,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:32:03,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:32:03,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:32:03,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:32:03,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:32:03,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:32:03,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:32:03,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:32:03,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:32:03,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:32:03,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:32:03,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:32:03,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:32:03,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:32:03,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:32:03,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:32:03,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:32:03,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:32:03,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:32:03,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:32:03,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:32:03,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:32:03,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:32:03,758 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:32:03,758 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:32:03,759 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:32:03,759 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:32:03,759 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:32:03,760 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:32:03,760 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:32:03,761 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:32:03,761 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:32:03,761 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:32:03,761 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:32:03,762 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:32:03,762 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:32:03,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:32:03,763 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:32:03,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:32:03,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:32:03,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:32:03,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:32:03,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:32:03,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:32:03,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:32:03,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:32:03,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:32:03,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:32:03,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:32:03,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:32:03,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:03,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:32:03,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:32:03,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:32:03,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:32:03,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:32:03,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:32:03,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:32:03,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:32:03,769 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_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 [2021-11-25 20:32:04,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:32:04,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:32:04,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:32:04,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:32:04,159 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:32:04,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2021-11-25 20:32:04,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/data/2b5dbe9a4/04c6e20203a04d45be858c49124313ac/FLAGa1e7fb04a [2021-11-25 20:32:04,671 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:32:04,672 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2021-11-25 20:32:04,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/data/2b5dbe9a4/04c6e20203a04d45be858c49124313ac/FLAGa1e7fb04a [2021-11-25 20:32:05,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/data/2b5dbe9a4/04c6e20203a04d45be858c49124313ac [2021-11-25 20:32:05,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:32:05,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:32:05,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:05,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:32:05,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:32:05,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc73a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05, skipping insertion in model container [2021-11-25 20:32:05,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:32:05,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:32:05,258 WARN L230 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_1ec649a8-d436-4674-a701-d24aa6b8ee01/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c[597,610] [2021-11-25 20:32:05,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:32:05,287 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:32:05,297 WARN L230 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_1ec649a8-d436-4674-a701-d24aa6b8ee01/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c[597,610] [2021-11-25 20:32:05,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:32:05,317 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:32:05,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05 WrapperNode [2021-11-25 20:32:05,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:32:05,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:32:05,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:32:05,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:32:05,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,352 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2021-11-25 20:32:05,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:32:05,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:32:05,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:32:05,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:32:05,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:32:05,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:32:05,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:32:05,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:32:05,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (1/1) ... [2021-11-25 20:32:05,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:32:05,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:05,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:32:05,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:32:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:32:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 20:32:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 20:32:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:32:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:32:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:32:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 20:32:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 20:32:05,505 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:32:05,506 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:32:05,650 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:32:05,677 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:32:05,678 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 20:32:05,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:05 BoogieIcfgContainer [2021-11-25 20:32:05,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:32:05,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:32:05,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:32:05,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:32:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:32:05" (1/3) ... [2021-11-25 20:32:05,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39685f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:05, skipping insertion in model container [2021-11-25 20:32:05,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:32:05" (2/3) ... [2021-11-25 20:32:05,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39685f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:32:05, skipping insertion in model container [2021-11-25 20:32:05,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:05" (3/3) ... [2021-11-25 20:32:05,703 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2021-11-25 20:32:05,708 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:32:05,708 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:32:05,789 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:32:05,807 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 [2021-11-25 20:32:05,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:32:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 20:32:05,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 20:32:05,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:05,848 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:05,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:05,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash -875772525, now seen corresponding path program 1 times [2021-11-25 20:32:05,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:05,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545835382] [2021-11-25 20:32:05,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:05,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:06,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:32:06,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131120282] [2021-11-25 20:32:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:06,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:06,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:06,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:06,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:32:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:06,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 20:32:06,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:32:06,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:32:06,371 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545835382] [2021-11-25 20:32:06,371 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:32:06,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131120282] [2021-11-25 20:32:06,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131120282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:32:06,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:32:06,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:32:06,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63160855] [2021-11-25 20:32:06,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:32:06,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:32:06,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:06,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:32:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:32:06,412 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 20:32:06,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:06,606 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-11-25 20:32:06,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:32:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-25 20:32:06,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:06,620 INFO L225 Difference]: With dead ends: 44 [2021-11-25 20:32:06,620 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 20:32:06,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:32:06,633 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:06,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:32:06,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 20:32:06,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 20:32:06,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 20:32:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-25 20:32:06,686 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2021-11-25 20:32:06,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:06,688 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-25 20:32:06,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-25 20:32:06,689 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-25 20:32:06,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:32:06,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:06,692 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:06,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:06,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 20:32:06,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:06,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:06,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1069731805, now seen corresponding path program 1 times [2021-11-25 20:32:06,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:06,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692398166] [2021-11-25 20:32:06,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:06,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:06,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:32:06,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769884145] [2021-11-25 20:32:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:06,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:06,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:06,927 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:06,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:32:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:06,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 20:32:07,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:32:08,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:32:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:32:08,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:08,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692398166] [2021-11-25 20:32:08,712 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:32:08,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769884145] [2021-11-25 20:32:08,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769884145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:32:08,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698219263] [2021-11-25 20:32:08,740 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-25 20:32:08,740 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:32:08,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:32:08,756 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:32:08,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:32:09,635 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2021-11-25 20:32:09,658 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2021-11-25 20:32:09,695 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:32:10,444 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '302#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0))' at error location [2021-11-25 20:32:10,445 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:32:10,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:32:10,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2021-11-25 20:32:10,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323760043] [2021-11-25 20:32:10,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:32:10,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:32:10,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:32:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:32:10,449 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 13 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 20:32:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:11,033 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-11-25 20:32:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:32:11,033 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 21 [2021-11-25 20:32:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:11,034 INFO L225 Difference]: With dead ends: 36 [2021-11-25 20:32:11,034 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 20:32:11,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2021-11-25 20:32:11,036 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:11,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 79 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:32:11,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 20:32:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2021-11-25 20:32:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-25 20:32:11,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-25 20:32:11,050 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21 [2021-11-25 20:32:11,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:11,050 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-25 20:32:11,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-25 20:32:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-25 20:32:11,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-25 20:32:11,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:32:11,053 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:32:11,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:32:11,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:11,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:32:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:32:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1008775609, now seen corresponding path program 1 times [2021-11-25 20:32:11,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:32:11,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567996322] [2021-11-25 20:32:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:11,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:32:11,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:32:11,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2096652283] [2021-11-25 20:32:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:32:11,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:32:11,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:32:11,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:32:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:32:11,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 20:32:11,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:32:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 20:32:12,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:32:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:32:12,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:32:12,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567996322] [2021-11-25 20:32:12,436 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:32:12,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096652283] [2021-11-25 20:32:12,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096652283] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:32:12,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [385310455] [2021-11-25 20:32:12,440 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-25 20:32:12,440 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:32:12,441 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:32:12,441 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:32:12,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:32:13,006 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 52 for LOIs [2021-11-25 20:32:13,086 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2021-11-25 20:32:13,113 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:32:14,472 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '592#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0))' at error location [2021-11-25 20:32:14,473 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:32:14,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:32:14,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 20 [2021-11-25 20:32:14,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542074489] [2021-11-25 20:32:14,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:32:14,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-25 20:32:14,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:32:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-25 20:32:14,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:32:14,475 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 20:32:24,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:32:24,691 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-11-25 20:32:24,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:32:24,691 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 28 [2021-11-25 20:32:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:32:24,692 INFO L225 Difference]: With dead ends: 38 [2021-11-25 20:32:24,692 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 20:32:24,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 522 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=262, Invalid=1715, Unknown=3, NotChecked=0, Total=1980 [2021-11-25 20:32:24,695 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:32:24,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 53 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:32:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 20:32:24,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 20:32:24,697 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) [2021-11-25 20:32:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 20:32:24,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-11-25 20:32:24,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:32:24,697 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 20:32:24,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 16 states have internal predecessors, (27), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-25 20:32:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 20:32:24,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 20:32:24,700 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:32:24,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 20:32:24,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:32:24,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 20:32:25,576 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 20:32:25,576 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~X~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|)) [2021-11-25 20:32:25,577 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-11-25 20:32:25,577 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2021-11-25 20:32:25,577 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-25 20:32:25,577 INFO L854 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse0 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)) (let ((.cse1 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~Y~0#1|)))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse1 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (<= |ULTIMATE.start_main_~X~0#1| 2) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse1 .cse2 .cse0)) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (= (+ .cse2 .cse0) (+ (* 2 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))))) [2021-11-25 20:32:25,577 INFO L861 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2021-11-25 20:32:25,578 INFO L854 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse0 (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~Y~0#1|))) (.cse1 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= |ULTIMATE.start_main_~X~0#1| 2) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1))) (= (+ .cse0 .cse1) (+ (* 2 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))) [2021-11-25 20:32:25,578 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 20:32:25,578 INFO L858 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2021-11-25 20:32:25,578 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse1 (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~Y~0#1|))) (.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= |ULTIMATE.start_main_~X~0#1| 2) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= |ULTIMATE.start_main_~Y~0#1| 2) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (= (+ (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* 2 |ULTIMATE.start_main_~y~0#1|) .cse1 .cse0))) (= (+ .cse1 .cse0) (+ (* 2 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)))) [2021-11-25 20:32:25,578 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2021-11-25 20:32:25,579 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2021-11-25 20:32:25,579 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2021-11-25 20:32:25,579 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-11-25 20:32:25,579 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2021-11-25 20:32:25,579 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-11-25 20:32:25,579 INFO L858 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2021-11-25 20:32:25,580 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2021-11-25 20:32:25,580 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-25 20:32:25,583 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-25 20:32:25,585 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:32:25,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:32:25 BoogieIcfgContainer [2021-11-25 20:32:25,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:32:25,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:32:25,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:32:25,601 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:32:25,601 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:32:05" (3/4) ... [2021-11-25 20:32:25,604 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 20:32:25,610 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 20:32:25,610 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 20:32:25,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-25 20:32:25,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 20:32:25,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 20:32:25,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 20:32:25,649 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 20:32:25,649 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:32:25,650 INFO L158 Benchmark]: Toolchain (without parser) took 20574.35ms. Allocated memory was 94.4MB in the beginning and 167.8MB in the end (delta: 73.4MB). Free memory was 53.6MB in the beginning and 111.8MB in the end (delta: -58.2MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,650 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:32:25,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.91ms. Allocated memory is still 94.4MB. Free memory was 53.4MB in the beginning and 70.3MB in the end (delta: -16.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.15ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,652 INFO L158 Benchmark]: Boogie Preprocessor took 21.13ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 67.9MB in the end (delta: 956.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,652 INFO L158 Benchmark]: RCFGBuilder took 304.51ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 57.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,652 INFO L158 Benchmark]: TraceAbstraction took 19916.43ms. Allocated memory was 94.4MB in the beginning and 167.8MB in the end (delta: 73.4MB). Free memory was 56.4MB in the beginning and 115.0MB in the end (delta: -58.6MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,653 INFO L158 Benchmark]: Witness Printer took 48.58ms. Allocated memory is still 167.8MB. Free memory was 115.0MB in the beginning and 111.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 20:32:25,655 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.91ms. Allocated memory is still 94.4MB. Free memory was 53.4MB in the beginning and 70.3MB in the end (delta: -16.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.15ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 68.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.13ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 67.9MB in the end (delta: 956.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 304.51ms. Allocated memory is still 94.4MB. Free memory was 67.5MB in the beginning and 57.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19916.43ms. Allocated memory was 94.4MB in the beginning and 167.8MB in the end (delta: 73.4MB). Free memory was 56.4MB in the beginning and 115.0MB in the end (delta: -58.6MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Witness Printer took 48.58ms. Allocated memory is still 167.8MB. Free memory was 115.0MB in the beginning and 111.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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: 16]: 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 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.8s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 191 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 196 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 379 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 29 mSDtfsCounter, 379 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 12.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 38, 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, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 30 NumberOfFragments, 227 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1197 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 953 SizeOfPredicates, 17 NumberOfNonLiveVariables, 246 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 32/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((X <= 2 && 0 <= Y) && Y <= 2) && 0 <= X) && (x <= X || 2 * (y * x) + X + v == 2 * y + 2 * (x * Y) + 2 * Y)) && 2 * (x * Y) + 2 * Y == 2 * (X * y) + X + v - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-25 20:32:25,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ec649a8-d436-4674-a701-d24aa6b8ee01/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE