./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006_variant.i --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_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/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_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/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_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/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 4cc4e6594048669dc8576432b007a54cfaf2cb918409d0a11b256ce036aec976 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:14:07,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:14:07,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:14:07,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:14:07,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:14:07,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:14:07,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:14:07,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:14:07,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:14:07,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:14:07,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:14:07,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:14:07,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:14:07,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:14:07,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:14:07,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:14:07,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:14:07,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:14:07,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:14:07,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:14:07,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:14:07,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:14:07,492 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:14:07,493 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:14:07,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:14:07,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:14:07,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:14:07,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:14:07,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:14:07,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:14:07,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:14:07,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:14:07,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:14:07,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:14:07,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:14:07,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:14:07,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:14:07,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:14:07,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:14:07,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:14:07,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:14:07,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:14:07,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:14:07,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:14:07,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:14:07,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:14:07,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:14:07,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:14:07,574 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:14:07,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:14:07,575 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:14:07,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:14:07,575 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:14:07,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:14:07,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:14:07,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:14:07,576 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:14:07,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:14:07,576 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:14:07,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:14:07,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:14:07,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:14:07,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:14:07,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:14:07,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:14:07,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:14:07,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:14:07,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:14:07,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:14:07,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:14:07,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:14:07,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:14:07,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:14:07,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:14:07,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:14:07,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:14:07,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:14:07,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:14:07,581 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:14:07,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:14:07,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:14:07,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:14:07,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:14:07,582 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_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cc4e6594048669dc8576432b007a54cfaf2cb918409d0a11b256ce036aec976 [2021-11-20 23:14:07,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:14:07,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:14:07,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:14:07,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:14:07,920 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:14:07,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loop-lit/jm2006_variant.i [2021-11-20 23:14:07,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/data/5a7b258fc/d9d6056011ff40688330952a837678d6/FLAGaf8f72b0b [2021-11-20 23:14:08,532 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:14:08,533 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/sv-benchmarks/c/loop-lit/jm2006_variant.i [2021-11-20 23:14:08,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/data/5a7b258fc/d9d6056011ff40688330952a837678d6/FLAGaf8f72b0b [2021-11-20 23:14:08,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/data/5a7b258fc/d9d6056011ff40688330952a837678d6 [2021-11-20 23:14:08,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:14:08,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:14:08,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:08,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:14:08,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:14:08,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:08" (1/1) ... [2021-11-20 23:14:08,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155cd03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:08, skipping insertion in model container [2021-11-20 23:14:08,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:14:08" (1/1) ... [2021-11-20 23:14:08,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:14:08,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:14:09,122 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_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/sv-benchmarks/c/loop-lit/jm2006_variant.i[895,908] [2021-11-20 23:14:09,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:09,156 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:14:09,168 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_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/sv-benchmarks/c/loop-lit/jm2006_variant.i[895,908] [2021-11-20 23:14:09,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:14:09,191 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:14:09,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09 WrapperNode [2021-11-20 23:14:09,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:14:09,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:14:09,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:14:09,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:14:09,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,221 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-11-20 23:14:09,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:14:09,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:14:09,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:14:09,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:14:09,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:14:09,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:14:09,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:14:09,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:14:09,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (1/1) ... [2021-11-20 23:14:09,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:14:09,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:09,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:14:09,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:14:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:14:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:14:09,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:14:09,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:14:09,393 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:14:09,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:14:09,503 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:14:09,523 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:14:09,529 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 23:14:09,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:09 BoogieIcfgContainer [2021-11-20 23:14:09,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:14:09,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:14:09,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:14:09,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:14:09,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:14:08" (1/3) ... [2021-11-20 23:14:09,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53277f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:09, skipping insertion in model container [2021-11-20 23:14:09,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:14:09" (2/3) ... [2021-11-20 23:14:09,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53277f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:14:09, skipping insertion in model container [2021-11-20 23:14:09,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:09" (3/3) ... [2021-11-20 23:14:09,546 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2021-11-20 23:14:09,552 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:14:09,552 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:14:09,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:14:09,635 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:14:09,635 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:14:09,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 23:14:09,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:09,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:09,665 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:09,671 INFO L85 PathProgramCache]: Analyzing trace with hash -168750113, now seen corresponding path program 1 times [2021-11-20 23:14:09,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:09,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734222903] [2021-11-20 23:14:09,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:09,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:10,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:10,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734222903] [2021-11-20 23:14:10,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734222903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:14:10,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:14:10,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:14:10,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286787140] [2021-11-20 23:14:10,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:14:10,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:14:10,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:10,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:14:10,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:14:10,137 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-20 23:14:10,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:10,307 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-11-20 23:14:10,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:14:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 7 [2021-11-20 23:14:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:10,349 INFO L225 Difference]: With dead ends: 31 [2021-11-20 23:14:10,350 INFO L226 Difference]: Without dead ends: 9 [2021-11-20 23:14:10,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:14:10,372 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:10,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:14:10,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-20 23:14:10,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-20 23:14:10,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-11-20 23:14:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-20 23:14:10,417 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-11-20 23:14:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:10,418 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-20 23:14:10,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-20 23:14:10,419 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-20 23:14:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:14:10,419 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:10,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:10,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:14:10,421 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:10,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash -960598576, now seen corresponding path program 1 times [2021-11-20 23:14:10,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:10,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697804810] [2021-11-20 23:14:10,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:10,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:10,604 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:10,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697804810] [2021-11-20 23:14:10,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697804810] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:14:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404868080] [2021-11-20 23:14:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:10,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:10,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:10,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:10,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:14:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:10,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 23:14:10,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:10,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:10,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:10,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404868080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:10,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2089172989] [2021-11-20 23:14:11,013 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-20 23:14:11,014 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:14:11,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:14:11,033 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:14:11,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:14:11,842 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:14:12,172 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:14:12,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:14:12,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-20 23:14:12,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129927960] [2021-11-20 23:14:12,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:14:12,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 23:14:12,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 23:14:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-11-20 23:14:12,177 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:12,444 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-20 23:14:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:14:12,444 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 8 [2021-11-20 23:14:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:12,445 INFO L225 Difference]: With dead ends: 19 [2021-11-20 23:14:12,445 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 23:14:12,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-11-20 23:14:12,448 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 25 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:12,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 12 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:14:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 23:14:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-20 23:14:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-20 23:14:12,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-11-20 23:14:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:12,453 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-20 23:14:12,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-20 23:14:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:14:12,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:14:12,454 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:14:12,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:12,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:12,660 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:14:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:14:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1802536991, now seen corresponding path program 2 times [2021-11-20 23:14:12,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:14:12,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958815676] [2021-11-20 23:14:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:14:12,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:14:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:14:12,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 23:14:12,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:14:12,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958815676] [2021-11-20 23:14:12,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958815676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:14:12,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039449635] [2021-11-20 23:14:12,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:14:12,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:14:12,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:14:12,804 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:14:12,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:14:12,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 23:14:12,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:14:12,861 WARN L261 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 23:14:12,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:14:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:13,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:14:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:14:13,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039449635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:14:13,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1394446020] [2021-11-20 23:14:13,328 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-20 23:14:13,328 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:14:13,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:14:13,329 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:14:13,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:14:13,906 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 23:14:14,228 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 23:14:14,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 23:14:14,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2021-11-20 23:14:14,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642916212] [2021-11-20 23:14:14,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 23:14:14,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 23:14:14,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:14:14,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 23:14:14,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2021-11-20 23:14:14,230 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:14:14,391 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-20 23:14:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 23:14:14,392 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 11 [2021-11-20 23:14:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:14:14,392 INFO L225 Difference]: With dead ends: 15 [2021-11-20 23:14:14,392 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 23:14:14,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-11-20 23:14:14,394 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:14:14,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:14:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 23:14:14,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 23:14:14,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:14,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 23:14:14,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-11-20 23:14:14,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:14:14,396 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 23:14:14,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:14:14,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 23:14:14,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 23:14:14,398 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 23:14:14,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:14:14,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-20 23:14:14,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 23:14:14,661 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 23:14:14,662 INFO L854 garLoopResultBuilder]: At program point L33-2(lines 33 37) the Hoare annotation is: (let ((.cse1 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse0 (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-11-20 23:14:14,662 INFO L858 garLoopResultBuilder]: For program point L33-3(lines 24 42) no Hoare annotation was computed. [2021-11-20 23:14:14,662 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-20 23:14:14,663 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-20 23:14:14,663 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 38 40) no Hoare annotation was computed. [2021-11-20 23:14:14,663 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 23:14:14,663 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-11-20 23:14:14,663 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-20 23:14:14,664 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-20 23:14:14,664 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2021-11-20 23:14:14,664 INFO L861 garLoopResultBuilder]: At program point L41(lines 24 42) the Hoare annotation is: true [2021-11-20 23:14:14,667 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-20 23:14:14,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:14:14,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:14:14 BoogieIcfgContainer [2021-11-20 23:14:14,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:14:14,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:14:14,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:14:14,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:14:14,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:14:09" (3/4) ... [2021-11-20 23:14:14,687 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 23:14:14,695 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-20 23:14:14,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 23:14:14,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-20 23:14:14,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 23:14:14,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:14:14,727 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:14:14,727 INFO L158 Benchmark]: Toolchain (without parser) took 5828.49ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 64.6MB in the beginning and 109.8MB in the end (delta: -45.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:14:14,728 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:14:14,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.42ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 77.6MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:14:14,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:14:14,729 INFO L158 Benchmark]: Boogie Preprocessor took 20.10ms. Allocated memory is still 100.7MB. Free memory was 75.9MB in the beginning and 75.1MB in the end (delta: 762.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:14:14,729 INFO L158 Benchmark]: RCFGBuilder took 289.82ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 65.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 23:14:14,730 INFO L158 Benchmark]: TraceAbstraction took 5148.54ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 65.0MB in the beginning and 112.9MB in the end (delta: -47.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2021-11-20 23:14:14,730 INFO L158 Benchmark]: Witness Printer took 43.60ms. Allocated memory is still 138.4MB. Free memory was 112.9MB in the beginning and 109.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:14:14,732 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 100.7MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.42ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 77.6MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.10ms. Allocated memory is still 100.7MB. Free memory was 75.9MB in the beginning and 75.1MB in the end (delta: 762.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 289.82ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 65.4MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5148.54ms. Allocated memory was 100.7MB in the beginning and 138.4MB in the end (delta: 37.7MB). Free memory was 65.0MB in the beginning and 112.9MB in the end (delta: -47.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * Witness Printer took 43.60ms. Allocated memory is still 138.4MB. Free memory was 112.9MB in the beginning and 109.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 15 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 30, 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 22 HoareAnnotationTreeSize, 3 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 151 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 16 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !(cond == 0) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: j + x <= i + y + z && i + y + z <= j + x RESULT: Ultimate proved your program to be correct! [2021-11-20 23:14:14,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9441bcc-de3b-4a8b-bae1-3e387b95c7e4/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