./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-2.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_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/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_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/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_7d158de8-9758-4616-b421-39ed3c763d4d/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 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:03:07,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:03:07,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:03:07,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:03:07,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:03:07,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:03:07,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:03:07,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:03:07,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:03:07,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:03:07,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:03:07,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:03:07,723 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:03:07,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:03:07,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:03:07,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:03:07,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:03:07,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:03:07,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:03:07,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:03:07,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:03:07,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:03:07,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:03:07,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:03:07,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:03:07,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:03:07,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:03:07,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:03:07,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:03:07,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:03:07,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:03:07,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:03:07,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:03:07,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:03:07,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:03:07,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:03:07,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:03:07,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:03:07,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:03:07,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:03:07,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:03:07,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:03:07,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:03:07,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:03:07,824 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:03:07,824 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:03:07,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:03:07,825 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:03:07,826 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:03:07,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:03:07,826 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:03:07,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:03:07,827 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:03:07,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:03:07,828 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:03:07,828 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:03:07,828 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:03:07,828 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:03:07,828 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:03:07,829 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:03:07,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:03:07,830 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:03:07,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:03:07,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:03:07,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:03:07,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:03:07,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:03:07,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:03:07,831 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:03:07,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:03:07,832 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:03:07,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:03:07,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:03:07,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:03:07,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:03:07,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:03:07,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:03:07,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:03:07,833 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:03:07,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:03:07,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:03:07,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:03:07,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:03:07,834 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_7d158de8-9758-4616-b421-39ed3c763d4d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2021-11-21 00:03:08,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:03:08,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:03:08,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:03:08,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:03:08,189 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:03:08,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-regression/test23-2.c [2021-11-21 00:03:08,263 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/data/e56fcd28b/d39a99c8aac74c1c8f8d1115b11e8ce4/FLAGbe6b9846b [2021-11-21 00:03:08,736 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:03:08,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/sv-benchmarks/c/ldv-regression/test23-2.c [2021-11-21 00:03:08,748 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/data/e56fcd28b/d39a99c8aac74c1c8f8d1115b11e8ce4/FLAGbe6b9846b [2021-11-21 00:03:09,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/data/e56fcd28b/d39a99c8aac74c1c8f8d1115b11e8ce4 [2021-11-21 00:03:09,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:03:09,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:03:09,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:03:09,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:03:09,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:03:09,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abe43b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09, skipping insertion in model container [2021-11-21 00:03:09,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:03:09,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:03:09,349 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_7d158de8-9758-4616-b421-39ed3c763d4d/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2021-11-21 00:03:09,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:03:09,365 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:03:09,382 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_7d158de8-9758-4616-b421-39ed3c763d4d/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2021-11-21 00:03:09,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:03:09,397 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:03:09,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09 WrapperNode [2021-11-21 00:03:09,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:03:09,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:03:09,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:03:09,400 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:03:09,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,436 INFO L137 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2021-11-21 00:03:09,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:03:09,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:03:09,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:03:09,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:03:09,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:03:09,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:03:09,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:03:09,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:03:09,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (1/1) ... [2021-11-21 00:03:09,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:03:09,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:09,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:03:09,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:03:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:03:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:03:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:03:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-11-21 00:03:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-11-21 00:03:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:03:09,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:03:09,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:03:09,633 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:03:09,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:03:09,799 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:03:09,859 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:03:09,860 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:03:09,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:09 BoogieIcfgContainer [2021-11-21 00:03:09,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:03:09,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:03:09,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:03:09,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:03:09,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:03:09" (1/3) ... [2021-11-21 00:03:09,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e61d8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:03:09, skipping insertion in model container [2021-11-21 00:03:09,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:03:09" (2/3) ... [2021-11-21 00:03:09,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e61d8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:03:09, skipping insertion in model container [2021-11-21 00:03:09,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:09" (3/3) ... [2021-11-21 00:03:09,871 INFO L111 eAbstractionObserver]: Analyzing ICFG test23-2.c [2021-11-21 00:03:09,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:03:09,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:03:09,960 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:03:09,967 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 [2021-11-21 00:03:09,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:03:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:03:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:03:09,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:09,990 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:09,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:10,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:10,011 INFO L85 PathProgramCache]: Analyzing trace with hash 835561940, now seen corresponding path program 1 times [2021-11-21 00:03:10,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:10,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748148861] [2021-11-21 00:03:10,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:10,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:03:10,299 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:10,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748148861] [2021-11-21 00:03:10,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748148861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:10,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:10,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:03:10,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335202300] [2021-11-21 00:03:10,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:10,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:03:10,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:10,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:03:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:03:10,353 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:03:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:10,408 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-11-21 00:03:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:03:10,411 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-21 00:03:10,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:10,419 INFO L225 Difference]: With dead ends: 24 [2021-11-21 00:03:10,419 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 00:03:10,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:03:10,429 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:10,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:03:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 00:03:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 00:03:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:03:10,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-21 00:03:10,487 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 14 [2021-11-21 00:03:10,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:10,489 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-21 00:03:10,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:03:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-21 00:03:10,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 00:03:10,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:10,493 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:10,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:03:10,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:10,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash 125333704, now seen corresponding path program 1 times [2021-11-21 00:03:10,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:10,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914205846] [2021-11-21 00:03:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:10,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:03:10,745 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914205846] [2021-11-21 00:03:10,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914205846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:03:10,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:03:10,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:03:10,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112450141] [2021-11-21 00:03:10,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:03:10,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:03:10,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:03:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:03:10,757 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:03:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:10,819 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-21 00:03:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:03:10,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-21 00:03:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:10,823 INFO L225 Difference]: With dead ends: 20 [2021-11-21 00:03:10,823 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 00:03:10,827 INFO L932 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 [2021-11-21 00:03:10,829 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:10,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:03:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 00:03:10,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-21 00:03:10,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:03:10,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-21 00:03:10,851 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 15 [2021-11-21 00:03:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:10,852 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-21 00:03:10,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:03:10,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-21 00:03:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:03:10,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:10,857 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:10,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:03:10,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:10,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:10,858 INFO L85 PathProgramCache]: Analyzing trace with hash 214916579, now seen corresponding path program 1 times [2021-11-21 00:03:10,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:10,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745204612] [2021-11-21 00:03:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:10,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:03:11,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:11,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745204612] [2021-11-21 00:03:11,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745204612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:03:11,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540190842] [2021-11-21 00:03:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:11,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:03:11,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:11,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:03:11,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:03:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:11,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:03:11,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:11,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 57 [2021-11-21 00:03:11,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-21 00:03:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:03:11,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:11,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-11-21 00:03:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:03:11,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540190842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:03:11,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [626619956] [2021-11-21 00:03:11,564 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 00:03:11,565 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:03:11,569 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:03:11,575 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:03:11,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:03:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:11,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 76 [2021-11-21 00:03:14,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-21 00:03:16,552 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 104 for LOIs [2021-11-21 00:03:16,990 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:03:39,989 WARN L227 SmtUtils]: Spent 16.94s on a formula simplification. DAG size of input: 114 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:03:48,402 WARN L227 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:03:48,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:03:48,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:03:48,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2021-11-21 00:03:48,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288312499] [2021-11-21 00:03:48,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:03:48,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 00:03:48,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:03:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 00:03:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:03:48,881 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:03:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:03:49,021 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-21 00:03:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 00:03:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-11-21 00:03:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:03:49,024 INFO L225 Difference]: With dead ends: 26 [2021-11-21 00:03:49,024 INFO L226 Difference]: Without dead ends: 22 [2021-11-21 00:03:49,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 32.0s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-11-21 00:03:49,026 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:03:49,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2021-11-21 00:03:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-21 00:03:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-21 00:03:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 00:03:49,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-21 00:03:49,032 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2021-11-21 00:03:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:03:49,032 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-21 00:03:49,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:03:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-21 00:03:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:03:49,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:03:49,033 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:03:49,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:03:49,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:03:49,234 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:03:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:03:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1974322356, now seen corresponding path program 2 times [2021-11-21 00:03:49,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:03:49,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553793753] [2021-11-21 00:03:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:03:49,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:03:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:03:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:03:49,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:03:49,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553793753] [2021-11-21 00:03:49,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553793753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:03:49,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831232805] [2021-11-21 00:03:49,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:03:49,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:03:49,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:03:49,398 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:03:49,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:03:49,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 00:03:49,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:03:49,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-21 00:03:49,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:03:49,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-21 00:03:49,852 INFO L354 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2021-11-21 00:03:49,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 40 [2021-11-21 00:03:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:03:49,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:03:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-21 00:03:52,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831232805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:03:52,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015360185] [2021-11-21 00:03:52,324 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-21 00:03:52,324 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:03:52,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:03:52,325 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:03:52,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:03:52,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:03:52,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 76 [2021-11-21 00:03:54,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-21 00:03:56,598 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 104 for LOIs [2021-11-21 00:03:57,020 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:04:21,001 WARN L227 SmtUtils]: Spent 17.77s on a formula simplification. DAG size of input: 114 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:30,113 WARN L227 SmtUtils]: Spent 9.04s on a formula simplification that was a NOOP. DAG size: 102 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:32,671 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:04:32,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:04:32,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2021-11-21 00:04:32,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290123354] [2021-11-21 00:04:32,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:04:32,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-21 00:04:32,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:04:32,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-21 00:04:32,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=825, Unknown=1, NotChecked=0, Total=930 [2021-11-21 00:04:32,674 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:04:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:37,416 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-11-21 00:04:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:04:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-21 00:04:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:37,416 INFO L225 Difference]: With dead ends: 26 [2021-11-21 00:04:37,416 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:04:37,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 42.7s TimeCoverageRelationStatistics Valid=270, Invalid=1451, Unknown=1, NotChecked=0, Total=1722 [2021-11-21 00:04:37,419 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:37,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 59 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-11-21 00:04:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:04:37,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:04:37,421 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) [2021-11-21 00:04:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:04:37,421 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-11-21 00:04:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:37,421 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:04:37,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 20 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:04:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:04:37,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:04:37,424 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 00:04:37,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:37,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:37,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 00:04:37,670 INFO L861 garLoopResultBuilder]: At program point get_dummyENTRY(lines 23 26) the Hoare annotation is: true [2021-11-21 00:04:37,670 INFO L858 garLoopResultBuilder]: For program point get_dummyEXIT(lines 23 26) no Hoare annotation was computed. [2021-11-21 00:04:37,670 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 00:04:37,670 INFO L854 garLoopResultBuilder]: At program point L46(lines 34 54) the Hoare annotation is: false [2021-11-21 00:04:37,670 INFO L858 garLoopResultBuilder]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2021-11-21 00:04:37,670 INFO L854 garLoopResultBuilder]: At program point L42-3(lines 42 44) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~pd2~0#1.offset| 3) |ULTIMATE.start_main_~pa~0#1.offset|) 4) 0) (let ((.cse0 (div (+ (* |ULTIMATE.start_main_~pd2~0#1.offset| (- 1)) |ULTIMATE.start_main_~pa~0#1.offset| (- 8)) 4))) (= .cse0 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) (+ (* .cse0 4) 8 |ULTIMATE.start_main_~pd2~0#1.offset|)))) (< |ULTIMATE.start_main_~i~0#1| (+ (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) 1)) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|)) [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 48) no Hoare annotation was computed. [2021-11-21 00:04:37,671 INFO L854 garLoopResultBuilder]: At program point L42-4(lines 42 44) the Hoare annotation is: (exists ((|aux_div_ULTIMATE.start_main_~pa~0#1.offset_92| Int)) (let ((.cse1 (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|)) (.cse2 (* |aux_div_ULTIMATE.start_main_~pa~0#1.offset_92| 4))) (let ((.cse0 (select .cse1 (+ (* |ULTIMATE.start_main_~pd2~0#1.offset| (- 3)) .cse2)))) (and (< |ULTIMATE.start_main_~i~0#1| (+ .cse0 1)) (= |aux_div_ULTIMATE.start_main_~pa~0#1.offset_92| (+ (select .cse1 (+ (* (div (+ .cse2 (* |ULTIMATE.start_main_~pd2~0#1.offset| (- 4)) (- 8)) 4) 4) 8 |ULTIMATE.start_main_~pd2~0#1.offset|)) 2 |ULTIMATE.start_main_~pd2~0#1.offset|)) (<= .cse0 |ULTIMATE.start_main_~i~0#1|))))) [2021-11-21 00:04:37,671 INFO L861 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2021-11-21 00:04:37,671 INFO L861 garLoopResultBuilder]: At program point L36-2(line 36) the Hoare annotation is: true [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2021-11-21 00:04:37,671 INFO L861 garLoopResultBuilder]: At program point L53(lines 33 54) the Hoare annotation is: true [2021-11-21 00:04:37,671 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-11-21 00:04:37,674 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-21 00:04:37,675 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:04:37,690 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,690 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,690 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,691 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,692 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,692 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,693 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,693 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:04:37 BoogieIcfgContainer [2021-11-21 00:04:37,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:04:37,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:04:37,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:04:37,695 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:04:37,696 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:03:09" (3/4) ... [2021-11-21 00:04:37,698 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 00:04:37,702 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2021-11-21 00:04:37,718 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-21 00:04:37,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-21 00:04:37,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-21 00:04:37,719 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 00:04:37,742 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 : int :: (i < unknown-#memory_int-unknown[pd2][pd2 * -3 + aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 * 4] + 1 && aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 * 4 + pd2 * -4 + -8) / 4 * 4 + 8 + pd2] + 2 + pd2) && unknown-#memory_int-unknown[pd2][pd2 * -3 + aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 * 4] <= i) [2021-11-21 00:04:37,754 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 00:04:37,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:04:37,755 INFO L158 Benchmark]: Toolchain (without parser) took 88663.42ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 54.2MB in the beginning and 34.7MB in the end (delta: 19.6MB). Peak memory consumption was 69.7MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,756 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 70.8MB in the end (delta: 15.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:04:37,756 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.47ms. Allocated memory is still 96.5MB. Free memory was 54.1MB in the beginning and 71.0MB in the end (delta: -16.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,757 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.01ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 69.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,757 INFO L158 Benchmark]: Boogie Preprocessor took 26.74ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 68.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,758 INFO L158 Benchmark]: RCFGBuilder took 397.87ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 55.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,758 INFO L158 Benchmark]: TraceAbstraction took 87830.55ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 54.9MB in the beginning and 37.8MB in the end (delta: 17.1MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,758 INFO L158 Benchmark]: Witness Printer took 60.04ms. Allocated memory is still 146.8MB. Free memory was 37.8MB in the beginning and 34.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:04:37,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 96.5MB. Free memory was 70.8MB in the beginning and 70.8MB in the end (delta: 15.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 304.47ms. Allocated memory is still 96.5MB. Free memory was 54.1MB in the beginning and 71.0MB in the end (delta: -16.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.01ms. Allocated memory is still 96.5MB. Free memory was 71.0MB in the beginning and 69.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.74ms. Allocated memory is still 96.5MB. Free memory was 69.3MB in the beginning and 68.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.87ms. Allocated memory is still 96.5MB. Free memory was 68.0MB in the beginning and 55.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 87830.55ms. Allocated memory was 96.5MB in the beginning and 146.8MB in the end (delta: 50.3MB). Free memory was 54.9MB in the beginning and 37.8MB in the end (delta: 17.1MB). Peak memory consumption was 69.8MB. Max. memory is 16.1GB. * Witness Printer took 60.04ms. Allocated memory is still 146.8MB. Free memory was 37.8MB in the beginning and 34.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] * 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: 52]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 87.7s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 143 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 23 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 42 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 81 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 74.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 15 NumberOfFragments, 107 HoareAnnotationTreeSize, 8 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 241 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 109 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 141 ConstructedInterpolants, 12 QuantifiedInterpolants, 1162 SizeOfPredicates, 34 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 41/82 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: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((pd2 * 3 + pa) % 4 == 0 && (pd2 * -1 + pa + -8) / 4 == unknown-#memory_int-unknown[pd2][(pd2 * -1 + pa + -8) / 4 * 4 + 8 + pd2]) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pa == pd2 - InvariantResult [Line: 42]: Loop Invariant [2021-11-21 00:04:37,783 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,784 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] [2021-11-21 00:04:37,785 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_92,QUANTIFIED] Derived loop invariant: (\exists aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 : int :: (i < unknown-#memory_int-unknown[pd2][pd2 * -3 + aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 * 4] + 1 && aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 == unknown-#memory_int-unknown[pd2][(aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 * 4 + pd2 * -4 + -8) / 4 * 4 + 8 + pd2] + 2 + pd2) && unknown-#memory_int-unknown[pd2][pd2 * -3 + aux_div_ULTIMATE.start_main_~pa~0#1.offset_92 * 4] <= i) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-21 00:04:37,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d158de8-9758-4616-b421-39ed3c763d4d/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