./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9 --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 ca45dd6499a33c329d4936fe2abf573a615c1738e62276020fbb87860c7f9abc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:00:22,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:00:22,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:00:22,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:00:22,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:00:22,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:00:22,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:00:22,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:00:22,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:00:22,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:00:22,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:00:22,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:00:22,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:00:22,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:00:22,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:00:22,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:00:22,407 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:00:22,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:00:22,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:00:22,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:00:22,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:00:22,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:00:22,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:00:22,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:00:22,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:00:22,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:00:22,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:00:22,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:00:22,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:00:22,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:00:22,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:00:22,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:00:22,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:00:22,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:00:22,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:00:22,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:00:22,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:00:22,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:00:22,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:00:22,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:00:22,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:00:22,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:00:22,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:00:22,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:00:22,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:00:22,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:00:22,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:00:22,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:00:22,475 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:00:22,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:00:22,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:00:22,476 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:00:22,476 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:00:22,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:00:22,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:00:22,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:00:22,477 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:00:22,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:00:22,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:00:22,478 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:00:22,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:00:22,479 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:00:22,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:00:22,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:00:22,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:00:22,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:00:22,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:00:22,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:00:22,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:00:22,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:00:22,482 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:00:22,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:00:22,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:00:22,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:00:22,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:00:22,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:00:22,484 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:00:22,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:00:22,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:00:22,485 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:00:22,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:00:22,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:00:22,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:00:22,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca45dd6499a33c329d4936fe2abf573a615c1738e62276020fbb87860c7f9abc [2022-11-20 20:00:22,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:00:22,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:00:22,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:00:22,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:00:22,886 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:00:22,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/loops-crafted-1/loopv1.c [2022-11-20 20:00:26,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:00:26,866 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:00:26,867 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/sv-benchmarks/c/loops-crafted-1/loopv1.c [2022-11-20 20:00:26,874 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/data/7168cac66/e3f9f366d47a4125b911241aa40d2239/FLAGba5087759 [2022-11-20 20:00:26,892 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/data/7168cac66/e3f9f366d47a4125b911241aa40d2239 [2022-11-20 20:00:26,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:00:26,897 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:00:26,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:00:26,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:00:26,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:00:26,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:00:26" (1/1) ... [2022-11-20 20:00:26,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cecfa64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:26, skipping insertion in model container [2022-11-20 20:00:26,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:00:26" (1/1) ... [2022-11-20 20:00:26,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:00:26,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:00:27,128 WARN L237 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_eb40db9b-a4f1-4445-8a80-08dd7962102f/sv-benchmarks/c/loops-crafted-1/loopv1.c[456,469] [2022-11-20 20:00:27,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:00:27,167 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:00:27,184 WARN L237 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_eb40db9b-a4f1-4445-8a80-08dd7962102f/sv-benchmarks/c/loops-crafted-1/loopv1.c[456,469] [2022-11-20 20:00:27,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:00:27,208 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:00:27,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27 WrapperNode [2022-11-20 20:00:27,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:00:27,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:00:27,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:00:27,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:00:27,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,252 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-11-20 20:00:27,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:00:27,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:00:27,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:00:27,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:00:27,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:00:27,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:00:27,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:00:27,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:00:27,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (1/1) ... [2022-11-20 20:00:27,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:00:27,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:27,339 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:00:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:00:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:00:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:00:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:00:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:00:27,480 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:00:27,482 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:00:27,614 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:00:27,653 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:00:27,659 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:00:27,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:00:27 BoogieIcfgContainer [2022-11-20 20:00:27,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:00:27,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:00:27,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:00:27,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:00:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:00:26" (1/3) ... [2022-11-20 20:00:27,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e69a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:00:27, skipping insertion in model container [2022-11-20 20:00:27,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:00:27" (2/3) ... [2022-11-20 20:00:27,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e69a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:00:27, skipping insertion in model container [2022-11-20 20:00:27,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:00:27" (3/3) ... [2022-11-20 20:00:27,682 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv1.c [2022-11-20 20:00:27,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:00:27,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:00:27,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:00:27,792 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d503ea5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:00:27,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:00:27,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:27,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:00:27,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:27,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:00:27,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:00:27,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:27,818 INFO L85 PathProgramCache]: Analyzing trace with hash 66747185, now seen corresponding path program 1 times [2022-11-20 20:00:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:27,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512461512] [2022-11-20 20:00:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:28,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:28,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512461512] [2022-11-20 20:00:28,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512461512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:00:28,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:00:28,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:00:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897151299] [2022-11-20 20:00:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:00:28,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:00:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:28,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:00:28,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:00:28,416 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:28,567 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-20 20:00:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:00:28,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 20:00:28,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:28,581 INFO L225 Difference]: With dead ends: 21 [2022-11-20 20:00:28,583 INFO L226 Difference]: Without dead ends: 7 [2022-11-20 20:00:28,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:00:28,596 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:28,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:00:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-20 20:00:28,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-20 20:00:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-20 20:00:28,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-20 20:00:28,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:28,634 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-20 20:00:28,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:00:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-20 20:00:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 20:00:28,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:00:28,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 20:00:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:00:28,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:00:28,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:00:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2069119459, now seen corresponding path program 1 times [2022-11-20 20:00:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:00:28,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438439515] [2022-11-20 20:00:28,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:28,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:00:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:29,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:29,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:00:29,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438439515] [2022-11-20 20:00:29,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438439515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:00:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333830528] [2022-11-20 20:00:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:00:29,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:00:29,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:00:29,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:00:29,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:00:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:00:29,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 20:00:29,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:00:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:29,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:00:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:00:29,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333830528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:00:29,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [523642550] [2022-11-20 20:00:29,762 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-20 20:00:29,762 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:00:29,766 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:00:29,775 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:00:29,777 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:00:30,108 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:00:30,622 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '96#(and (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (ite (and (< |ULTIMATE.start_main_~i~0#1| 0) (not (= (mod |ULTIMATE.start_main_~i~0#1| 3) 0))) (+ (- 3) (mod |ULTIMATE.start_main_~i~0#1| 3)) (mod |ULTIMATE.start_main_~i~0#1| 3)) 0) 1 0)) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= ~SIZE~0 50000001) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~n~0#1| 50000001) (<= 0 |#StackHeapBarrier|) (<= 50000001 ~SIZE~0) (= |#NULL.base| 0) (<= |ULTIMATE.start_main_~j~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~n~0#1| 2147483648)))' at error location [2022-11-20 20:00:30,622 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:00:30,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:00:30,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-20 20:00:30,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281646804] [2022-11-20 20:00:30,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:00:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:00:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:00:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:00:30,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:00:30,626 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2022-11-20 20:00:30,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:00:30,742 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-20 20:00:30,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:00:30,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) Word has length 6 [2022-11-20 20:00:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:00:30,742 INFO L225 Difference]: With dead ends: 9 [2022-11-20 20:00:30,742 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:00:30,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-20 20:00:30,744 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:00:30,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:00:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:00:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:00:30,746 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) [2022-11-20 20:00:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:00:30,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-20 20:00:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:00:30,746 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:00:30,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2022-11-20 20:00:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:00:30,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:00:30,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:00:30,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:00:30,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-20 20:00:30,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:00:30,996 INFO L902 garLoopResultBuilder]: At program point L33(lines 20 34) the Hoare annotation is: true [2022-11-20 20:00:30,997 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:00:30,997 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 25 31) the Hoare annotation is: (or (= |ULTIMATE.start_main_~i~0#1| 0) (and (<= 1 |ULTIMATE.start_main_~n~0#1|) (< |ULTIMATE.start_main_~i~0#1| (+ (* 3 (div |ULTIMATE.start_main_~i~0#1| 3)) 1)))) [2022-11-20 20:00:30,997 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-11-20 20:00:30,997 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 15) no Hoare annotation was computed. [2022-11-20 20:00:30,998 INFO L895 garLoopResultBuilder]: At program point L13-2(lines 12 17) the Hoare annotation is: (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) [2022-11-20 20:00:30,999 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:00:31,001 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-11-20 20:00:31,003 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2022-11-20 20:00:31,007 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:00:31,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:00:31,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:00:31 BoogieIcfgContainer [2022-11-20 20:00:31,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:00:31,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:00:31,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:00:31,035 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:00:31,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:00:27" (3/4) ... [2022-11-20 20:00:31,041 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:00:31,054 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-20 20:00:31,054 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 20:00:31,055 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:00:31,056 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:00:31,095 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:00:31,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:00:31,096 INFO L158 Benchmark]: Toolchain (without parser) took 4198.88ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 107.0MB in the beginning and 101.3MB in the end (delta: 5.7MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2022-11-20 20:00:31,097 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 151.0MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:00:31,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.42ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 96.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:00:31,098 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.84ms. Allocated memory is still 151.0MB. Free memory was 96.6MB in the beginning and 95.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:00:31,099 INFO L158 Benchmark]: Boogie Preprocessor took 46.76ms. Allocated memory is still 151.0MB. Free memory was 95.1MB in the beginning and 94.5MB in the end (delta: 593.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:00:31,099 INFO L158 Benchmark]: RCFGBuilder took 370.95ms. Allocated memory is still 151.0MB. Free memory was 93.9MB in the beginning and 83.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:00:31,100 INFO L158 Benchmark]: TraceAbstraction took 3360.09ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 83.1MB in the beginning and 103.4MB in the end (delta: -20.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-11-20 20:00:31,100 INFO L158 Benchmark]: Witness Printer took 60.59ms. Allocated memory is still 188.7MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:00:31,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 151.0MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.42ms. Allocated memory is still 151.0MB. Free memory was 106.4MB in the beginning and 96.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.84ms. Allocated memory is still 151.0MB. Free memory was 96.6MB in the beginning and 95.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.76ms. Allocated memory is still 151.0MB. Free memory was 95.1MB in the beginning and 94.5MB in the end (delta: 593.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 370.95ms. Allocated memory is still 151.0MB. Free memory was 93.9MB in the beginning and 83.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3360.09ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 83.1MB in the beginning and 103.4MB in the end (delta: -20.4MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. * Witness Printer took 60.59ms. Allocated memory is still 188.7MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 6 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 22 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 5 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: !(cond == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i == 0 || (1 <= n && i < 3 * (i / 3) + 1) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:00:31,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb40db9b-a4f1-4445-8a80-08dd7962102f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE