./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8 --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 1130d3df8d11f3be805af96558350a1bd8faf89323cc035b32267e4a54793a8c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:31:59,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:31:59,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:31:59,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:31:59,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:31:59,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:31:59,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:31:59,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:31:59,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:31:59,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:31:59,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:31:59,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:31:59,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:31:59,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:31:59,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:31:59,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:31:59,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:31:59,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:31:59,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:31:59,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:31:59,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:31:59,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:31:59,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:31:59,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:31:59,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:31:59,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:31:59,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:31:59,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:31:59,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:31:59,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:31:59,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:31:59,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:31:59,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:31:59,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:31:59,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:31:59,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:31:59,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:31:59,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:31:59,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:31:59,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:31:59,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:31:59,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:31:59,684 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:31:59,684 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:31:59,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:31:59,685 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:31:59,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:31:59,686 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:31:59,686 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:31:59,686 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:31:59,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:31:59,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:31:59,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:31:59,687 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:31:59,688 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:31:59,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:31:59,688 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:31:59,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:31:59,689 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:31:59,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:31:59,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:31:59,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:31:59,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:31:59,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:31:59,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:31:59,691 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:31:59,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:31:59,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:31:59,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:31:59,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:31:59,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:31:59,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:31:59,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:31:59,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:31:59,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:31:59,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:31:59,701 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:31:59,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:31:59,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:31:59,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:31:59,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:31:59,703 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_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1130d3df8d11f3be805af96558350a1bd8faf89323cc035b32267e4a54793a8c [2021-11-07 01:32:00,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:32:00,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:32:00,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:32:00,148 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:32:00,149 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:32:00,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-11-07 01:32:00,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/data/d9e0c5cfb/987eff3c1815468390c4c3739c98568d/FLAGab7beaffb [2021-11-07 01:32:00,797 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:32:00,800 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-11-07 01:32:00,812 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/data/d9e0c5cfb/987eff3c1815468390c4c3739c98568d/FLAGab7beaffb [2021-11-07 01:32:01,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/data/d9e0c5cfb/987eff3c1815468390c4c3739c98568d [2021-11-07 01:32:01,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:32:01,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:32:01,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:01,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:32:01,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:32:01,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f74e582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01, skipping insertion in model container [2021-11-07 01:32:01,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:32:01,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:32:01,406 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_e29274ea-4d75-4977-9d25-5a160a5f5657/sv-benchmarks/c/loop-zilu/benchmark25_linear.i[868,881] [2021-11-07 01:32:01,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:01,445 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:32:01,470 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_e29274ea-4d75-4977-9d25-5a160a5f5657/sv-benchmarks/c/loop-zilu/benchmark25_linear.i[868,881] [2021-11-07 01:32:01,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:32:01,495 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:32:01,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01 WrapperNode [2021-11-07 01:32:01,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:32:01,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:32:01,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:32:01,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:32:01,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:32:01,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:32:01,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:32:01,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:32:01,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:32:01,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:32:01,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:32:01,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:32:01,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (1/1) ... [2021-11-07 01:32:01,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:32:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:01,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:32:01,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:32:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:32:01,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:32:01,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:32:01,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:32:01,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:32:01,996 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:32:02,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:32:02 BoogieIcfgContainer [2021-11-07 01:32:02,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:32:02,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:32:02,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:32:02,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:32:02,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:32:01" (1/3) ... [2021-11-07 01:32:02,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d487975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:32:02, skipping insertion in model container [2021-11-07 01:32:02,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:32:01" (2/3) ... [2021-11-07 01:32:02,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d487975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:32:02, skipping insertion in model container [2021-11-07 01:32:02,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:32:02" (3/3) ... [2021-11-07 01:32:02,018 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2021-11-07 01:32:02,030 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:32:02,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:32:02,099 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:32:02,114 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 [2021-11-07 01:32:02,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:32:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) 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) [2021-11-07 01:32:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:32:02,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:02,156 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:32:02,156 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:02,170 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-11-07 01:32:02,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:02,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726318934] [2021-11-07 01:32:02,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:02,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:02,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:02,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726318934] [2021-11-07 01:32:02,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726318934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:02,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:02,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:32:02,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769812647] [2021-11-07 01:32:02,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:32:02,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:02,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:32:02,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:32:02,417 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:02,443 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-11-07 01:32:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:32:02,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:32:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:02,465 INFO L225 Difference]: With dead ends: 16 [2021-11-07 01:32:02,466 INFO L226 Difference]: Without dead ends: 7 [2021-11-07 01:32:02,468 INFO L786 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 [2021-11-07 01:32:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-07 01:32:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-07 01:32:02,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-07 01:32:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-07 01:32:02,498 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-07 01:32:02,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:02,499 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-07 01:32:02,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:02,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-07 01:32:02,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:32:02,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:02,500 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:32:02,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:32:02,501 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-11-07 01:32:02,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:02,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026995935] [2021-11-07 01:32:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:02,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:02,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:02,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026995935] [2021-11-07 01:32:02,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026995935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:32:02,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573166061] [2021-11-07 01:32:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:02,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:02,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:32:02,555 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:32:02,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:32:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:02,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:32:02,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:32:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:02,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:32:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:32:02,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573166061] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:32:02,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [743867818] [2021-11-07 01:32:02,750 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 01:32:02,750 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:32:02,756 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:32:02,762 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:32:02,774 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:32:02,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,822 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:02,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:32:02,828 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:32:02,829 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,830 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 01:32:02,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:32:02,861 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-07 01:32:02,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:02,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-07 01:32:02,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 01:32:02,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 01:32:02,921 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:02,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:02,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:32:02,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 01:32:02,970 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:02,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:32:02,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:32:02,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:02,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:32:02,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-07 01:32:03,000 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:32:03,000 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-07 01:32:03,012 INFO L180 QuantifierPusher]: treesize reduction 6, result has 93.4 percent of original size [2021-11-07 01:32:03,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-07 01:32:03,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,271 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.5 percent of original size [2021-11-07 01:32:03,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-11-07 01:32:03,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:03,371 INFO L180 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-11-07 01:32:03,375 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:32:03,386 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:32:03,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:32:03,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:32:03,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-07 01:32:03,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162111267] [2021-11-07 01:32:03,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:32:03,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:03,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:32:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:32:03,738 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-11-07 01:32:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:03,762 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-07 01:32:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:32:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 [2021-11-07 01:32:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:03,764 INFO L225 Difference]: With dead ends: 13 [2021-11-07 01:32:03,765 INFO L226 Difference]: Without dead ends: 10 [2021-11-07 01:32:03,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:32:03,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-07 01:32:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-07 01:32:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:32:03,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-11-07 01:32:03,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-11-07 01:32:03,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:03,775 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-11-07 01:32:03,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-11-07 01:32:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-11-07 01:32:03,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:32:03,778 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:32:03,778 INFO L513 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-11-07 01:32:03,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 01:32:03,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:32:03,994 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:32:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:32:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1390313566, now seen corresponding path program 2 times [2021-11-07 01:32:03,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:32:03,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213943082] [2021-11-07 01:32:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:32:03,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:32:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:32:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 01:32:04,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:32:04,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213943082] [2021-11-07 01:32:04,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213943082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:32:04,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:32:04,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:32:04,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397288541] [2021-11-07 01:32:04,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:32:04,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:32:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:32:04,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:32:04,061 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-07 01:32:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:32:04,079 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-11-07 01:32:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:32:04,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:32:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:32:04,081 INFO L225 Difference]: With dead ends: 10 [2021-11-07 01:32:04,081 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:32:04,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:32:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:32:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:32:04,085 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) [2021-11-07 01:32:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:32:04,085 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-11-07 01:32:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:32:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:32:04,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-07 01:32:04,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:32:04,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:32:04,091 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:32:04,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 01:32:04,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:32:04,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:04,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:32:04,117 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:32:04,118 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-07 01:32:04,119 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-07 01:32:04,119 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:32:04,120 INFO L860 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-11-07 01:32:04,120 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-07 01:32:04,121 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 10) [2021-11-07 01:32:04,121 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-07 01:32:04,121 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-11-07 01:32:04,125 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-07 01:32:04,127 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:32:04,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:32:04 BoogieIcfgContainer [2021-11-07 01:32:04,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:32:04,147 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:32:04,147 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:32:04,148 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:32:04,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:32:02" (3/4) ... [2021-11-07 01:32:04,155 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:32:04,172 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-07 01:32:04,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-07 01:32:04,173 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:32:04,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:32:04,227 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:32:04,228 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:32:04,231 INFO L168 Benchmark]: Toolchain (without parser) took 3091.91 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 52.8 MB in the beginning and 56.6 MB in the end (delta: -3.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,231 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:32:04,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.04 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 52.6 MB in the beginning and 95.4 MB in the end (delta: -42.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,232 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.43 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 93.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,233 INFO L168 Benchmark]: Boogie Preprocessor took 41.38 ms. Allocated memory is still 119.5 MB. Free memory was 93.9 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,233 INFO L168 Benchmark]: RCFGBuilder took 410.29 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 83.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,234 INFO L168 Benchmark]: TraceAbstraction took 2140.71 ms. Allocated memory is still 119.5 MB. Free memory was 82.8 MB in the beginning and 58.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,234 INFO L168 Benchmark]: Witness Printer took 81.02 ms. Allocated memory is still 119.5 MB. Free memory was 58.7 MB in the beginning and 56.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:32:04,237 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 69.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.04 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 52.6 MB in the beginning and 95.4 MB in the end (delta: -42.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.43 ms. Allocated memory is still 119.5 MB. Free memory was 95.4 MB in the beginning and 93.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.38 ms. Allocated memory is still 119.5 MB. Free memory was 93.9 MB in the beginning and 92.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 410.29 ms. Allocated memory is still 119.5 MB. Free memory was 92.8 MB in the beginning and 83.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2140.71 ms. Allocated memory is still 119.5 MB. Free memory was 82.8 MB in the beginning and 58.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. * Witness Printer took 81.02 ms. Allocated memory is still 119.5 MB. Free memory was 58.7 MB in the beginning and 56.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 1 SDslu, 9 SDs, 0 SdLazy, 16 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 10 RESULT: Ultimate proved your program to be correct! [2021-11-07 01:32:04,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29274ea-4d75-4977-9d25-5a160a5f5657/bin/utaipan-UUZaoUuFF8/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