./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P --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 c8ee88878035a7d0dcaaed453412906e138032b7646709b0475a2b7f1b3ea855 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:50:57,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:50:57,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:50:57,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:50:57,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:50:57,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:50:57,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:50:57,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:50:57,106 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:50:57,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:50:57,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:50:57,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:50:57,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:50:57,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:50:57,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:50:57,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:50:57,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:50:57,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:50:57,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:50:57,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:50:57,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:50:57,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:50:57,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:50:57,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:50:57,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:50:57,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:50:57,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:50:57,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:50:57,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:50:57,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:50:57,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:50:57,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:50:57,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:50:57,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:50:57,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:50:57,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:50:57,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:50:57,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:50:57,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:50:57,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:50:57,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:50:57,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 22:50:57,196 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:50:57,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:50:57,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:50:57,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:50:57,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:50:57,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:50:57,198 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:50:57,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:50:57,199 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:50:57,199 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:50:57,199 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:50:57,199 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:50:57,199 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:50:57,200 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:50:57,200 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:50:57,200 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:50:57,200 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:50:57,201 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:50:57,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:50:57,201 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:50:57,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:50:57,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:50:57,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:50:57,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:50:57,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:50:57,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:50:57,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:50:57,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:50:57,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:50:57,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:50:57,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:50:57,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:50:57,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:57,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:50:57,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:50:57,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:50:57,205 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:50:57,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:50:57,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:50:57,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:50:57,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:50:57,206 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_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ee88878035a7d0dcaaed453412906e138032b7646709b0475a2b7f1b3ea855 [2021-11-20 22:50:57,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:50:57,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:50:57,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:50:57,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:50:57,524 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:50:57,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loops-crafted-1/loopv2.c [2021-11-20 22:50:57,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/data/e378d48d3/94322ee06df84942a1423954a6dbacca/FLAG71e8102eb [2021-11-20 22:50:58,013 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:50:58,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/sv-benchmarks/c/loops-crafted-1/loopv2.c [2021-11-20 22:50:58,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/data/e378d48d3/94322ee06df84942a1423954a6dbacca/FLAG71e8102eb [2021-11-20 22:50:58,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/data/e378d48d3/94322ee06df84942a1423954a6dbacca [2021-11-20 22:50:58,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:50:58,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:50:58,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:58,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:50:58,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:50:58,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc272dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58, skipping insertion in model container [2021-11-20 22:50:58,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:50:58,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:50:58,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/sv-benchmarks/c/loops-crafted-1/loopv2.c[454,467] [2021-11-20 22:50:58,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:58,653 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:50:58,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/sv-benchmarks/c/loops-crafted-1/loopv2.c[454,467] [2021-11-20 22:50:58,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:50:58,695 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:50:58,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58 WrapperNode [2021-11-20 22:50:58,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:50:58,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:50:58,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:50:58,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:50:58,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,734 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2021-11-20 22:50:58,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:50:58,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:50:58,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:50:58,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:50:58,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:50:58,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:50:58,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:50:58,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:50:58,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (1/1) ... [2021-11-20 22:50:58,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:50:58,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:50:58,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:50:58,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:50:58,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:50:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:50:58,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:50:58,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:50:58,930 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:50:58,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:50:59,019 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:50:59,046 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:50:59,047 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 22:50:59,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:59 BoogieIcfgContainer [2021-11-20 22:50:59,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:50:59,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:50:59,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:50:59,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:50:59,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:50:58" (1/3) ... [2021-11-20 22:50:59,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abc5460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:59, skipping insertion in model container [2021-11-20 22:50:59,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:50:58" (2/3) ... [2021-11-20 22:50:59,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5abc5460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:50:59, skipping insertion in model container [2021-11-20 22:50:59,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:59" (3/3) ... [2021-11-20 22:50:59,074 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv2.c [2021-11-20 22:50:59,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:50:59,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:50:59,122 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:50:59,129 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 22:50:59,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 22:50:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 22:50:59,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:59,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 22:50:59,149 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2025170632, now seen corresponding path program 1 times [2021-11-20 22:50:59,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:59,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881129201] [2021-11-20 22:50:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:59,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:59,334 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:59,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881129201] [2021-11-20 22:50:59,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881129201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:59,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:59,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:50:59,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727832092] [2021-11-20 22:50:59,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:59,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:50:59,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:59,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:50:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:50:59,418 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:59,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:59,484 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-20 22:50:59,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:50:59,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 22:50:59,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:59,494 INFO L225 Difference]: With dead ends: 18 [2021-11-20 22:50:59,494 INFO L226 Difference]: Without dead ends: 9 [2021-11-20 22:50:59,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:50:59,501 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:59,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:50:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-20 22:50:59,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-20 22:50:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-20 22:50:59,530 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2021-11-20 22:50:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:59,531 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-20 22:50:59,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:50:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-20 22:50:59,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 22:50:59,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:59,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:59,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:50:59,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:50:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:59,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1610123544, now seen corresponding path program 1 times [2021-11-20 22:50:59,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:59,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569828576] [2021-11-20 22:50:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:59,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:59,685 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:59,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569828576] [2021-11-20 22:50:59,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569828576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:50:59,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608047480] [2021-11-20 22:50:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:59,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:50:59,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:50:59,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:50:59,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:50:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:59,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 22:50:59,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:59,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:59,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:50:59,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608047480] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:50:59,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [986394954] [2021-11-20 22:50:59,930 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-20 22:50:59,930 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:50:59,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:50:59,939 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:50:59,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:51:00,763 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 22:51:01,011 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 22:51:01,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:51:01,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 22:51:01,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689724256] [2021-11-20 22:51:01,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:51:01,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 22:51:01,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:51:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 22:51:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-20 22:51:01,015 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:51:01,089 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2021-11-20 22:51:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 22:51:01,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 22:51:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:51:01,090 INFO L225 Difference]: With dead ends: 12 [2021-11-20 22:51:01,091 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 22:51:01,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-20 22:51:01,093 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:51:01,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:51:01,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 22:51:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 22:51:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 22:51:01,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-20 22:51:01,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:51:01,095 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 22:51:01,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:51:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 22:51:01,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 22:51:01,101 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 22:51:01,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:51:01,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:51:01,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 22:51:01,342 INFO L861 garLoopResultBuilder]: At program point L33(lines 17 34) the Hoare annotation is: true [2021-11-20 22:51:01,342 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 22:51:01,343 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-11-20 22:51:01,343 INFO L861 garLoopResultBuilder]: At program point L11-2(lines 10 15) the Hoare annotation is: true [2021-11-20 22:51:01,343 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 22:51:01,343 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 31) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~i~0#1| 2) 0) (= 0 (mod |ULTIMATE.start_main_~j~0#1| 2))) [2021-11-20 22:51:01,344 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-11-20 22:51:01,344 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-11-20 22:51:01,344 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= (mod |ULTIMATE.start_main_~i~0#1| 2) 0) (= 0 (mod |ULTIMATE.start_main_~j~0#1| 2))) [2021-11-20 22:51:01,344 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-20 22:51:01,348 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-20 22:51:01,349 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 22:51:01,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:51:01 BoogieIcfgContainer [2021-11-20 22:51:01,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 22:51:01,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 22:51:01,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 22:51:01,364 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 22:51:01,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:50:59" (3/4) ... [2021-11-20 22:51:01,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 22:51:01,388 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-20 22:51:01,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-20 22:51:01,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 22:51:01,389 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 22:51:01,423 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 22:51:01,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 22:51:01,424 INFO L158 Benchmark]: Toolchain (without parser) took 3000.29ms. Allocated memory was 90.2MB in the beginning and 134.2MB in the end (delta: 44.0MB). Free memory was 53.6MB in the beginning and 109.1MB in the end (delta: -55.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-11-20 22:51:01,425 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 69.4MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:51:01,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.89ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 84.9MB in the end (delta: -31.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-20 22:51:01,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.04ms. Allocated memory is still 109.1MB. Free memory was 84.9MB in the beginning and 83.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:51:01,426 INFO L158 Benchmark]: Boogie Preprocessor took 39.72ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 82.5MB in the end (delta: 939.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:51:01,427 INFO L158 Benchmark]: RCFGBuilder took 285.45ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 72.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 22:51:01,427 INFO L158 Benchmark]: TraceAbstraction took 2299.17ms. Allocated memory is still 109.1MB. Free memory was 72.2MB in the beginning and 50.2MB in the end (delta: 22.1MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2021-11-20 22:51:01,428 INFO L158 Benchmark]: Witness Printer took 59.83ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 50.2MB in the beginning and 109.1MB in the end (delta: -58.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:51:01,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 69.5MB in the beginning and 69.4MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.89ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 84.9MB in the end (delta: -31.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.04ms. Allocated memory is still 109.1MB. Free memory was 84.9MB in the beginning and 83.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.72ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 82.5MB in the end (delta: 939.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.45ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 72.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2299.17ms. Allocated memory is still 109.1MB. Free memory was 72.2MB in the beginning and 50.2MB in the end (delta: 22.1MB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Witness Printer took 59.83ms. Allocated memory was 109.1MB in the beginning and 134.2MB in the end (delta: 25.2MB). Free memory was 50.2MB in the beginning and 109.1MB in the end (delta: -58.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: 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, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 8 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 24 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 2 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: i % 2 == 0 && 0 == j % 2 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: i % 2 == 0 && 0 == j % 2 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-20 22:51:01,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e15c5d9-f0e2-4340-9662-4bf27dcecdd0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE