./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8 --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 7cbb17f5b7bb6fe0e12d1310641ba9d20bfc6717 ............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 06:45:22,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 06:45:22,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 06:45:22,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 06:45:22,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 06:45:22,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 06:45:22,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 06:45:22,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 06:45:22,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 06:45:22,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 06:45:22,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 06:45:22,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 06:45:22,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 06:45:22,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 06:45:22,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 06:45:22,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 06:45:22,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 06:45:22,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 06:45:22,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 06:45:22,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 06:45:22,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 06:45:22,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 06:45:22,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 06:45:22,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 06:45:22,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 06:45:22,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 06:45:22,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 06:45:22,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 06:45:22,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 06:45:22,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 06:45:22,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 06:45:22,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 06:45:22,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 06:45:22,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 06:45:22,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 06:45:22,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 06:45:22,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 06:45:22,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 06:45:22,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 06:45:22,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 06:45:22,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 06:45:22,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 06:45:22,159 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 06:45:22,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 06:45:22,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 06:45:22,163 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 06:45:22,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 06:45:22,164 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 06:45:22,164 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 06:45:22,164 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 06:45:22,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 06:45:22,165 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 06:45:22,166 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 06:45:22,166 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 06:45:22,166 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 06:45:22,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 06:45:22,167 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 06:45:22,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 06:45:22,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 06:45:22,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 06:45:22,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 06:45:22,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 06:45:22,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 06:45:22,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 06:45:22,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 06:45:22,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 06:45:22,170 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 06:45:22,170 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 06:45:22,170 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 06:45:22,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 06:45:22,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 06:45:22,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 06:45:22,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:45:22,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 06:45:22,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 06:45:22,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 06:45:22,172 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 06:45:22,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 06:45:22,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 06:45:22,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 06:45:22,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 06:45:22,173 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_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cbb17f5b7bb6fe0e12d1310641ba9d20bfc6717 [2021-10-13 06:45:22,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 06:45:22,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 06:45:22,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 06:45:22,465 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 06:45:22,466 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 06:45:22,467 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2021-10-13 06:45:22,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/data/0ca23ef4e/4e565051a36d4010bd93b48a788b6889/FLAG35fb264f1 [2021-10-13 06:45:22,985 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 06:45:22,986 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c [2021-10-13 06:45:22,991 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/data/0ca23ef4e/4e565051a36d4010bd93b48a788b6889/FLAG35fb264f1 [2021-10-13 06:45:23,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/data/0ca23ef4e/4e565051a36d4010bd93b48a788b6889 [2021-10-13 06:45:23,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 06:45:23,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 06:45:23,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 06:45:23,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 06:45:23,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 06:45:23,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c0bf900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23, skipping insertion in model container [2021-10-13 06:45:23,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 06:45:23,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 06:45:23,572 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_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c[319,332] [2021-10-13 06:45:23,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:45:23,598 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 06:45:23,616 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_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/sv-benchmarks/c/loops-crafted-1/mono-crafted_12.c[319,332] [2021-10-13 06:45:23,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 06:45:23,630 INFO L208 MainTranslator]: Completed translation [2021-10-13 06:45:23,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23 WrapperNode [2021-10-13 06:45:23,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 06:45:23,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 06:45:23,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 06:45:23,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 06:45:23,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 06:45:23,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 06:45:23,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 06:45:23,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 06:45:23,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 06:45:23,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 06:45:23,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 06:45:23,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 06:45:23,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (1/1) ... [2021-10-13 06:45:23,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 06:45:23,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:23,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 06:45:23,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 06:45:23,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 06:45:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 06:45:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 06:45:23,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 06:45:24,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 06:45:24,045 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 06:45:24,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:24 BoogieIcfgContainer [2021-10-13 06:45:24,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 06:45:24,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 06:45:24,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 06:45:24,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 06:45:24,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 06:45:23" (1/3) ... [2021-10-13 06:45:24,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c4cc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:45:24, skipping insertion in model container [2021-10-13 06:45:24,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 06:45:23" (2/3) ... [2021-10-13 06:45:24,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c4cc89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 06:45:24, skipping insertion in model container [2021-10-13 06:45:24,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:24" (3/3) ... [2021-10-13 06:45:24,056 INFO L111 eAbstractionObserver]: Analyzing ICFG mono-crafted_12.c [2021-10-13 06:45:24,061 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 06:45:24,076 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 06:45:24,120 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 06:45:24,127 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, mConcurrency=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 [2021-10-13 06:45:24,127 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 06:45:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-10-13 06:45:24,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 06:45:24,145 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:45:24,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 06:45:24,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:45:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:45:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2065030, now seen corresponding path program 1 times [2021-10-13 06:45:24,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:45:24,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268957803] [2021-10-13 06:45:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:24,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:45:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:24,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:45:24,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268957803] [2021-10-13 06:45:24,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268957803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 06:45:24,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 06:45:24,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 06:45:24,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404758381] [2021-10-13 06:45:24,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:45:24,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:45:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:45:24,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 06:45:24,516 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:45:24,558 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-13 06:45:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 06:45:24,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 06:45:24,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:45:24,567 INFO L225 Difference]: With dead ends: 15 [2021-10-13 06:45:24,568 INFO L226 Difference]: Without dead ends: 6 [2021-10-13 06:45:24,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 06:45:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-13 06:45:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-13 06:45:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2021-10-13 06:45:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-13 06:45:24,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-13 06:45:24,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:45:24,602 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-13 06:45:24,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:24,602 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-13 06:45:24,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 06:45:24,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 06:45:24,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 06:45:24,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 06:45:24,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 06:45:24,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 06:45:24,605 INFO L82 PathProgramCache]: Analyzing trace with hash 64119683, now seen corresponding path program 1 times [2021-10-13 06:45:24,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 06:45:24,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485721042] [2021-10-13 06:45:24,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:24,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 06:45:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:24,715 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 06:45:24,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485721042] [2021-10-13 06:45:24,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485721042] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 06:45:24,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371041472] [2021-10-13 06:45:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 06:45:24,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:24,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 06:45:24,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 06:45:24,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 06:45:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 06:45:24,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 06:45:24,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 06:45:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 06:45:24,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 06:45:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 06:45:25,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371041472] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-13 06:45:25,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-13 06:45:25,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2021-10-13 06:45:25,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009949284] [2021-10-13 06:45:25,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 06:45:25,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 06:45:25,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 06:45:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-13 06:45:25,147 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:25,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 06:45:25,163 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-10-13 06:45:25,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 06:45:25,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 06:45:25,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 06:45:25,164 INFO L225 Difference]: With dead ends: 6 [2021-10-13 06:45:25,164 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 06:45:25,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-13 06:45:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 06:45:25,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 06:45:25,183 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) [2021-10-13 06:45:25,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 06:45:25,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-10-13 06:45:25,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 06:45:25,183 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 06:45:25,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 06:45:25,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 06:45:25,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 06:45:25,187 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 06:45:25,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 06:45:25,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 06:45:25,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 06:45:25,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:45:25,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 06:45:25,421 INFO L853 garLoopResultBuilder]: At program point L4-3(line 4) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-13 06:45:25,422 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 06:45:25,422 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 06:45:25,422 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2021-10-13 06:45:25,423 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 10 14) the Hoare annotation is: (= (mod ULTIMATE.start_main_~z~0 2) 0) [2021-10-13 06:45:25,423 INFO L857 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2021-10-13 06:45:25,423 INFO L857 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2021-10-13 06:45:25,428 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 06:45:25,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 06:45:25 BoogieIcfgContainer [2021-10-13 06:45:25,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 06:45:25,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 06:45:25,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 06:45:25,442 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 06:45:25,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 06:45:24" (3/4) ... [2021-10-13 06:45:25,459 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 06:45:25,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-10-13 06:45:25,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-13 06:45:25,472 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 06:45:25,472 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 06:45:25,515 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 06:45:25,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 06:45:25,517 INFO L168 Benchmark]: Toolchain (without parser) took 2134.09 ms. Allocated memory is still 121.6 MB. Free memory was 86.2 MB in the beginning and 93.9 MB in the end (delta: -7.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:45:25,518 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 52.0 MB in the beginning and 51.9 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:45:25,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.87 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 98.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:25,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.68 ms. Allocated memory is still 121.6 MB. Free memory was 98.6 MB in the beginning and 97.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:25,520 INFO L168 Benchmark]: Boogie Preprocessor took 34.80 ms. Allocated memory is still 121.6 MB. Free memory was 97.1 MB in the beginning and 95.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:45:25,521 INFO L168 Benchmark]: RCFGBuilder took 342.99 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 85.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:25,521 INFO L168 Benchmark]: TraceAbstraction took 1391.83 ms. Allocated memory is still 121.6 MB. Free memory was 84.5 MB in the beginning and 96.0 MB in the end (delta: -11.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 06:45:25,522 INFO L168 Benchmark]: Witness Printer took 74.01 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 93.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 06:45:25,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 52.0 MB in the beginning and 51.9 MB in the end (delta: 29.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.87 ms. Allocated memory is still 121.6 MB. Free memory was 86.0 MB in the beginning and 98.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.68 ms. Allocated memory is still 121.6 MB. Free memory was 98.6 MB in the beginning and 97.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.80 ms. Allocated memory is still 121.6 MB. Free memory was 97.1 MB in the beginning and 95.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.99 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 85.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1391.83 ms. Allocated memory is still 121.6 MB. Free memory was 84.5 MB in the beginning and 96.0 MB in the end (delta: -11.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 74.01 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 93.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4]: 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1308.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 8.9ms, AutomataDifference: 119.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 18.4ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5 SDtfs, 7 SDslu, 7 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 86.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 9 HoareAnnotationTreeSize, 2 FomulaSimplifications, 19 FormulaSimplificationTreeSizeReduction, 8.4ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 2.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 17.5ms SsaConstructionTime, 114.3ms SatisfiabilityAnalysisTime, 589.7ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 3 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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: 10]: Loop Invariant Derived loop invariant: z % 2 == 0 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: !(0 == cond) RESULT: Ultimate proved your program to be correct! [2021-10-13 06:45:25,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb5539cd-e8be-4af5-83a4-fb5dc0f3e44a/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...