./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs --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 d9faee3f662d8da670e15948dd6059c5055f2d98 ...................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:14:05,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:14:05,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:14:05,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:14:05,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:14:05,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:14:05,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:14:05,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:14:05,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:14:05,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:14:05,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:14:05,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:14:05,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:14:05,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:14:05,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:14:05,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:14:06,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:14:06,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:14:06,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:14:06,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:14:06,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:14:06,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:14:06,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:14:06,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:14:06,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:14:06,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:14:06,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:14:06,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:14:06,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:14:06,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:14:06,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:14:06,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:14:06,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:14:06,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:14:06,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:14:06,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:14:06,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:14:06,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:14:06,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:14:06,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:14:06,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:14:06,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:14:06,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:14:06,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:14:06,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:14:06,061 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:14:06,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:14:06,062 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:14:06,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:14:06,062 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:14:06,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:14:06,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:14:06,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:14:06,063 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:14:06,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:14:06,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:14:06,064 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:14:06,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:14:06,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:14:06,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:14:06,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:14:06,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:14:06,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:14:06,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:14:06,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:14:06,067 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:14:06,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:14:06,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:14:06,068 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:14:06,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:14:06,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:14:06,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:14:06,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:06,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:14:06,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:14:06,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:14:06,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:14:06,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:14:06,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:14:06,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:14:06,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:14:06,071 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_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9faee3f662d8da670e15948dd6059c5055f2d98 [2021-10-16 03:14:06,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:14:06,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:14:06,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:14:06,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:14:06,371 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:14:06,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-acceleration/simple_2-1.c [2021-10-16 03:14:06,477 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/data/dc74e09e0/5c29a9af7b044adb8cc59ba31604f46d/FLAG27d6fb5b4 [2021-10-16 03:14:07,027 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:14:07,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/sv-benchmarks/c/loop-acceleration/simple_2-1.c [2021-10-16 03:14:07,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/data/dc74e09e0/5c29a9af7b044adb8cc59ba31604f46d/FLAG27d6fb5b4 [2021-10-16 03:14:07,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/data/dc74e09e0/5c29a9af7b044adb8cc59ba31604f46d [2021-10-16 03:14:07,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:14:07,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:14:07,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:07,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:14:07,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:14:07,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97ac897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07, skipping insertion in model container [2021-10-16 03:14:07,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:14:07,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:14:07,614 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_007c01ed-e193-4ac7-afc1-5f44d444699c/sv-benchmarks/c/loop-acceleration/simple_2-1.c[372,385] [2021-10-16 03:14:07,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:07,638 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:14:07,653 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_007c01ed-e193-4ac7-afc1-5f44d444699c/sv-benchmarks/c/loop-acceleration/simple_2-1.c[372,385] [2021-10-16 03:14:07,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:07,672 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:14:07,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07 WrapperNode [2021-10-16 03:14:07,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:07,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:07,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:14:07,675 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:14:07,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:07,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:14:07,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:14:07,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:14:07,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:14:07,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:14:07,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:14:07,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:14:07,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (1/1) ... [2021-10-16 03:14:07,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:07,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:14:07,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:14:07,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:14:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:14:07,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:14:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:14:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:14:08,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:14:08,080 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-16 03:14:08,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:08 BoogieIcfgContainer [2021-10-16 03:14:08,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:14:08,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:14:08,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:14:08,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:14:08,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:14:07" (1/3) ... [2021-10-16 03:14:08,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d88c13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:08, skipping insertion in model container [2021-10-16 03:14:08,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:07" (2/3) ... [2021-10-16 03:14:08,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d88c13e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:08, skipping insertion in model container [2021-10-16 03:14:08,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:08" (3/3) ... [2021-10-16 03:14:08,098 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-1.c [2021-10-16 03:14:08,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:14:08,105 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:14:08,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:14:08,212 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 [2021-10-16 03:14:08,212 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:14:08,229 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) [2021-10-16 03:14:08,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 03:14:08,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:08,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 03:14:08,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:08,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1818790, now seen corresponding path program 1 times [2021-10-16 03:14:08,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:08,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583585319] [2021-10-16 03:14:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:08,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:08,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:08,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583585319] [2021-10-16 03:14:08,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583585319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:08,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:08,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 03:14:08,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426182316] [2021-10-16 03:14:08,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:14:08,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:14:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:08,560 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 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-10-16 03:14:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:08,581 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-16 03:14:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:08,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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 [2021-10-16 03:14:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:08,591 INFO L225 Difference]: With dead ends: 9 [2021-10-16 03:14:08,591 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:14:08,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:14:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:14:08,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:14:08,622 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) [2021-10-16 03:14:08,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:14:08,624 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 03:14:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:08,625 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:14:08,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) 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) [2021-10-16 03:14:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:14:08,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:14:08,629 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:14:08,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:14:08,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:14:08,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:14:08,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:14:08,647 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:14:08,647 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-16 03:14:08,648 INFO L853 garLoopResultBuilder]: At program point L7-2(lines 1 21) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-16 03:14:08,648 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:14:08,649 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2021-10-16 03:14:08,649 INFO L860 garLoopResultBuilder]: At program point L16-2(lines 16 18) the Hoare annotation is: true [2021-10-16 03:14:08,649 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-16 03:14:08,655 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:14:08,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:14:08 BoogieIcfgContainer [2021-10-16 03:14:08,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:14:08,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:14:08,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:14:08,672 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:14:08,672 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:08" (3/4) ... [2021-10-16 03:14:08,676 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:14:08,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-16 03:14:08,687 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-16 03:14:08,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:14:08,688 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:14:08,729 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:14:08,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:14:08,736 INFO L168 Benchmark]: Toolchain (without parser) took 1342.91 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 68.0 MB in the beginning and 88.1 MB in the end (delta: -20.0 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:08,737 INFO L168 Benchmark]: CDTParser took 1.16 ms. Allocated memory is still 100.7 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:08,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.04 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 67.8 MB in the beginning and 123.0 MB in the end (delta: -55.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:08,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.89 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 121.6 MB in the end (delta: 787.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:08,740 INFO L168 Benchmark]: Boogie Preprocessor took 25.00 ms. Allocated memory is still 146.8 MB. Free memory was 121.6 MB in the beginning and 120.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:08,741 INFO L168 Benchmark]: RCFGBuilder took 342.81 ms. Allocated memory is still 146.8 MB. Free memory was 120.4 MB in the beginning and 110.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:08,741 INFO L168 Benchmark]: TraceAbstraction took 584.82 ms. Allocated memory is still 146.8 MB. Free memory was 109.9 MB in the beginning and 90.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:08,742 INFO L168 Benchmark]: Witness Printer took 58.38 ms. Allocated memory is still 146.8 MB. Free memory was 90.2 MB in the beginning and 88.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:08,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16 ms. Allocated memory is still 100.7 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.04 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 67.8 MB in the beginning and 123.0 MB in the end (delta: -55.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.89 ms. Allocated memory is still 146.8 MB. Free memory was 122.4 MB in the beginning and 121.6 MB in the end (delta: 787.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.00 ms. Allocated memory is still 146.8 MB. Free memory was 121.6 MB in the beginning and 120.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 342.81 ms. Allocated memory is still 146.8 MB. Free memory was 120.4 MB in the beginning and 110.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 584.82 ms. Allocated memory is still 146.8 MB. Free memory was 109.9 MB in the beginning and 90.2 MB in the end (delta: 19.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 58.38 ms. Allocated memory is still 146.8 MB. Free memory was 90.2 MB in the beginning and 88.1 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: 8]: 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: 473.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 52.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 16.3ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 2 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.8ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 5 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 4.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 7.3ms SsaConstructionTime, 74.2ms SatisfiabilityAnalysisTime, 117.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-16 03:14:08,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_007c01ed-e193-4ac7-afc1-5f44d444699c/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...