./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8 --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 804eb6c71849995a146523396e6c0077d176b15b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8 --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 804eb6c71849995a146523396e6c0077d176b15b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:09:49,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:09:49,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:09:49,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:09:49,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:09:49,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:09:49,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:09:49,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:09:49,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:09:49,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:09:49,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:09:49,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:09:49,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:09:49,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:09:49,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:09:49,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:09:49,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:09:49,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:09:49,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:09:49,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:09:49,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:09:49,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:09:49,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:09:49,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:09:49,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:09:49,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:09:49,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:09:49,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:09:49,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:09:49,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:09:49,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:09:49,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:09:49,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:09:49,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:09:49,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:09:49,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:09:49,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:09:49,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:09:49,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:09:49,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:09:49,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:09:49,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:09:49,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:09:49,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:09:49,352 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:09:49,353 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:09:49,353 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:09:49,353 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:09:49,353 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:09:49,353 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:09:49,354 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:09:49,354 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:09:49,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:09:49,361 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:09:49,361 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:09:49,361 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:09:49,362 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:09:49,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:09:49,363 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:09:49,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:09:49,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:09:49,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:09:49,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:09:49,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:09:49,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:09:49,364 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:09:49,364 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:09:49,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:09:49,364 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:09:49,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:09:49,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:09:49,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:09:49,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:09:49,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:09:49,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:09:49,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:09:49,367 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:09:49,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:09:49,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:09:49,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:09:49,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:09:49,368 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_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804eb6c71849995a146523396e6c0077d176b15b [2021-10-13 08:09:49,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:09:49,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:09:49,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:09:49,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:09:49,705 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:09:49,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-10-13 08:09:49,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/a1c5ecda0/62a10a2577884d079cac2d94567f4717/FLAGa85df87db [2021-10-13 08:09:50,404 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:09:50,405 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-10-13 08:09:50,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/a1c5ecda0/62a10a2577884d079cac2d94567f4717/FLAGa85df87db [2021-10-13 08:09:50,663 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/a1c5ecda0/62a10a2577884d079cac2d94567f4717 [2021-10-13 08:09:50,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:09:50,667 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:09:50,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:09:50,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:09:50,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:09:50,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:09:50" (1/1) ... [2021-10-13 08:09:50,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4527130c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:50, skipping insertion in model container [2021-10-13 08:09:50,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:09:50" (1/1) ... [2021-10-13 08:09:50,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:09:50,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:09:51,063 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-10-13 08:09:51,068 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-10-13 08:09:51,078 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-10-13 08:09:51,079 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-10-13 08:09:51,083 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-10-13 08:09:51,083 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-10-13 08:09:51,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:09:51,104 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:09:51,157 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-10-13 08:09:51,162 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-10-13 08:09:51,166 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-10-13 08:09:51,170 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-10-13 08:09:51,173 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-10-13 08:09:51,174 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-10-13 08:09:51,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:09:51,211 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:09:51,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51 WrapperNode [2021-10-13 08:09:51,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:09:51,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:09:51,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:09:51,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:09:51,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:09:51,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:09:51,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:09:51,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:09:51,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:09:51,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:09:51,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:09:51,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:09:51,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (1/1) ... [2021-10-13 08:09:51,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:09:51,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:51,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:09:51,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:09:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 08:09:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 08:09:51,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:09:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:09:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:09:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:09:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:09:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:09:51,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:09:51,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:09:52,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:09:52,231 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 08:09:52,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:09:52 BoogieIcfgContainer [2021-10-13 08:09:52,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:09:52,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:09:52,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:09:52,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:09:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:09:50" (1/3) ... [2021-10-13 08:09:52,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cd42b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:09:52, skipping insertion in model container [2021-10-13 08:09:52,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:09:51" (2/3) ... [2021-10-13 08:09:52,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cd42b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:09:52, skipping insertion in model container [2021-10-13 08:09:52,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:09:52" (3/3) ... [2021-10-13 08:09:52,250 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2021-10-13 08:09:52,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:09:52,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 08:09:52,317 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:09:52,324 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, mConcurrency=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 [2021-10-13 08:09:52,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 08:09:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 43 states have internal predecessors, (71), 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) [2021-10-13 08:09:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 08:09:52,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:52,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 08:09:52,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:09:52,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:52,366 INFO L82 PathProgramCache]: Analyzing trace with hash 245535628, now seen corresponding path program 1 times [2021-10-13 08:09:52,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:52,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266578581] [2021-10-13 08:09:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:52,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:52,550 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:52,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266578581] [2021-10-13 08:09:52,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266578581] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:52,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:52,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:09:52,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714953596] [2021-10-13 08:09:52,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:09:52,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:09:52,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:09:52,583 INFO L87 Difference]: Start difference. First operand has 44 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 43 states have internal predecessors, (71), 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 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:52,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:52,608 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2021-10-13 08:09:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:09:52,610 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 08:09:52,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:52,618 INFO L225 Difference]: With dead ends: 85 [2021-10-13 08:09:52,619 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 08:09:52,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:09:52,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 08:09:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 08:09:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-10-13 08:09:52,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-13 08:09:52,664 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 5 [2021-10-13 08:09:52,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:52,664 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-13 08:09:52,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:52,665 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-13 08:09:52,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:09:52,666 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:52,666 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:09:52,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:09:52,666 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:09:52,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:52,671 INFO L82 PathProgramCache]: Analyzing trace with hash -996419023, now seen corresponding path program 1 times [2021-10-13 08:09:52,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:52,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040643377] [2021-10-13 08:09:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:52,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:52,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:52,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040643377] [2021-10-13 08:09:52,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040643377] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:52,762 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:52,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:09:52,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212344334] [2021-10-13 08:09:52,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:09:52,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:52,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:09:52,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:09:52,765 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:52,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:52,812 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-10-13 08:09:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:09:52,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:09:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:52,816 INFO L225 Difference]: With dead ends: 84 [2021-10-13 08:09:52,816 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 08:09:52,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:09:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 08:09:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-10-13 08:09:52,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 38 states have (on average 1.263157894736842) internal successors, (48), 43 states have internal predecessors, (48), 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) [2021-10-13 08:09:52,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-13 08:09:52,835 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 6 [2021-10-13 08:09:52,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:52,837 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-13 08:09:52,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:09:52,837 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-13 08:09:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:09:52,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:52,844 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:52,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:09:52,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:09:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:52,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1462768708, now seen corresponding path program 1 times [2021-10-13 08:09:52,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:52,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059457711] [2021-10-13 08:09:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:52,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:09:52,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:52,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059457711] [2021-10-13 08:09:52,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059457711] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:09:52,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:09:52,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:09:52,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392719105] [2021-10-13 08:09:52,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:09:52,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:09:52,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:09:52,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:09:52,986 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2021-10-13 08:09:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:09:53,136 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-13 08:09:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:09:53,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 8 [2021-10-13 08:09:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:09:53,138 INFO L225 Difference]: With dead ends: 72 [2021-10-13 08:09:53,138 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 08:09:53,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:09:53,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 08:09:53,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2021-10-13 08:09:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 41 states have internal predecessors, (46), 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) [2021-10-13 08:09:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-13 08:09:53,145 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2021-10-13 08:09:53,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:09:53,145 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-13 08:09:53,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2021-10-13 08:09:53,146 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-13 08:09:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 08:09:53,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:09:53,147 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:09:53,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:09:53,147 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:09:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:09:53,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2117176794, now seen corresponding path program 1 times [2021-10-13 08:09:53,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:09:53,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260139731] [2021-10-13 08:09:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:53,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:09:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:53,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:09:53,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260139731] [2021-10-13 08:09:53,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260139731] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 08:09:53,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514568362] [2021-10-13 08:09:53,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:09:53,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:09:53,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:09:53,501 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:09:53,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 08:09:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:09:53,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 08:09:53,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:09:53,798 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-13 08:09:53,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 31 [2021-10-13 08:09:54,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:54,446 INFO L354 Elim1Store]: treesize reduction 642, result has 7.2 percent of original size [2021-10-13 08:09:54,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 628 treesize of output 504 [2021-10-13 08:09:54,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 645 treesize of output 635 [2021-10-13 08:09:54,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:09:54,499 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-10-13 08:09:54,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 179 [2021-10-13 08:09:54,576 INFO L354 Elim1Store]: treesize reduction 44, result has 54.6 percent of original size [2021-10-13 08:09:54,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 179 treesize of output 217 [2021-10-13 08:09:54,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-10-13 08:09:54,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-10-13 08:09:55,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 08:09:55,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 61 [2021-10-13 08:09:55,650 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:09:55,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 33 [2021-10-13 08:09:55,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 08:09:55,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:09:55,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:09:56,319 INFO L354 Elim1Store]: treesize reduction 1280, result has 26.4 percent of original size [2021-10-13 08:09:56,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 732 treesize of output 917 [2021-10-13 08:09:56,648 INFO L354 Elim1Store]: treesize reduction 373, result has 34.1 percent of original size [2021-10-13 08:09:56,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 15 case distinctions, treesize of input 784 treesize of output 774 [2021-10-13 08:09:56,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 835 treesize of output 779 [2021-10-13 08:09:56,889 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-10-13 08:09:56,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 34 [2021-10-13 08:09:56,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2021-10-13 08:09:58,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:58,320 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 08:09:58,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-10-13 08:09:58,413 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-10-13 08:09:58,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 08:09:58,472 INFO L354 Elim1Store]: treesize reduction 30, result has 21.1 percent of original size [2021-10-13 08:09:58,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 36 [2021-10-13 08:09:58,512 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:09:58,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 135 [2021-10-13 08:09:58,993 INFO L354 Elim1Store]: treesize reduction 26, result has 80.6 percent of original size [2021-10-13 08:09:58,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 365 treesize of output 420 [2021-10-13 08:09:59,220 INFO L354 Elim1Store]: treesize reduction 58, result has 69.5 percent of original size [2021-10-13 08:09:59,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 420 treesize of output 499 [2021-10-13 08:09:59,351 INFO L354 Elim1Store]: treesize reduction 11, result has 85.9 percent of original size [2021-10-13 08:09:59,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 499 treesize of output 545 [2021-10-13 08:10:07,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:07,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514568362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 08:10:07,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1760542657] [2021-10-13 08:10:07,860 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-13 08:10:07,860 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 08:10:07,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 08:10:07,871 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 08:10:07,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 08:10:07,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,908 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-13 08:10:07,910 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-13 08:10:07,911 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 08:10:07,913 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:10:07,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-13 08:10:07,916 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,917 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:10:07,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-13 08:10:07,919 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,920 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 08:10:07,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 08:10:07,922 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,923 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,923 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-10-13 08:10:07,924 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 08:10:07,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:07,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 08:10:07,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-10-13 08:10:07,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:07,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:07,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:07,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:07,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:07,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:08,038 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 08:10:08,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 34 [2021-10-13 08:10:08,041 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:08,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:10:08,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:08,045 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 08:10:08,045 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 08:10:08,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:10:08,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:08,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:08,072 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 202 [2021-10-13 08:10:08,072 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 08:10:08,072 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:226, output treesize:202 [2021-10-13 08:10:08,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:08,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:08,302 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_25| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 08:10:08,306 INFO L168 Benchmark]: Toolchain (without parser) took 17638.82 ms. Allocated memory was 100.7 MB in the beginning and 220.2 MB in the end (delta: 119.5 MB). Free memory was 61.4 MB in the beginning and 87.9 MB in the end (delta: -26.5 MB). Peak memory consumption was 91.9 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:08,307 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 79.3 MB in the end (delta: 59.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:10:08,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 544.28 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 68.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:08,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.58 ms. Allocated memory is still 100.7 MB. Free memory was 68.0 MB in the beginning and 65.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:08,308 INFO L168 Benchmark]: Boogie Preprocessor took 43.02 ms. Allocated memory is still 100.7 MB. Free memory was 65.6 MB in the beginning and 63.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:08,308 INFO L168 Benchmark]: RCFGBuilder took 895.70 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.6 MB in the beginning and 99.3 MB in the end (delta: -35.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:08,309 INFO L168 Benchmark]: TraceAbstraction took 16070.81 ms. Allocated memory was 125.8 MB in the beginning and 220.2 MB in the end (delta: 94.4 MB). Free memory was 98.5 MB in the beginning and 87.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 103.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:08,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 100.7 MB. Free memory was 79.4 MB in the beginning and 79.3 MB in the end (delta: 59.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 544.28 ms. Allocated memory is still 100.7 MB. Free memory was 61.2 MB in the beginning and 68.0 MB in the end (delta: -6.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.58 ms. Allocated memory is still 100.7 MB. Free memory was 68.0 MB in the beginning and 65.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.02 ms. Allocated memory is still 100.7 MB. Free memory was 65.6 MB in the beginning and 63.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 895.70 ms. Allocated memory was 100.7 MB in the beginning and 125.8 MB in the end (delta: 25.2 MB). Free memory was 63.6 MB in the beginning and 99.3 MB in the end (delta: -35.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16070.81 ms. Allocated memory was 125.8 MB in the beginning and 220.2 MB in the end (delta: 94.4 MB). Free memory was 98.5 MB in the beginning and 87.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 103.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_25| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_25|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 08:10:08,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:10:10,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:10:10,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:10:10,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:10:10,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:10:10,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:10:10,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:10:10,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:10:10,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:10:10,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:10:10,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:10:10,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:10:10,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:10:10,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:10:10,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:10:11,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:10:11,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:10:11,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:10:11,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:10:11,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:10:11,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:10:11,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:10:11,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:10:11,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:10:11,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:10:11,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:10:11,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:10:11,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:10:11,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:10:11,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:10:11,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:10:11,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:10:11,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:10:11,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:10:11,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:10:11,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:10:11,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:10:11,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:10:11,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:10:11,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:10:11,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:10:11,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 08:10:11,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:10:11,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:10:11,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:10:11,109 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:10:11,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:10:11,110 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:10:11,110 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:10:11,110 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:10:11,110 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:10:11,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:10:11,113 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:10:11,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:10:11,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:10:11,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:10:11,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:10:11,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:10:11,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:10:11,116 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 08:10:11,116 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 08:10:11,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:10:11,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:10:11,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:10:11,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:10:11,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:10:11,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 08:10:11,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:10:11,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:10:11,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:10:11,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:10:11,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:10:11,120 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 08:10:11,120 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:11,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:10:11,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:10:11,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:10:11,122 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804eb6c71849995a146523396e6c0077d176b15b [2021-10-13 08:10:11,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:10:11,559 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:10:11,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:10:11,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:10:11,565 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:10:11,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-10-13 08:10:11,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/f4752fd19/a2068de199474a16b4c41ea37370d160/FLAG6ce3ad6ca [2021-10-13 08:10:12,270 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:10:12,271 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i [2021-10-13 08:10:12,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/f4752fd19/a2068de199474a16b4c41ea37370d160/FLAG6ce3ad6ca [2021-10-13 08:10:12,566 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/data/f4752fd19/a2068de199474a16b4c41ea37370d160 [2021-10-13 08:10:12,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:10:12,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:10:12,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:10:12,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:10:12,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:10:12,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:12" (1/1) ... [2021-10-13 08:10:12,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433a1535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:12, skipping insertion in model container [2021-10-13 08:10:12,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:10:12" (1/1) ... [2021-10-13 08:10:12,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:10:12,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:10:12,963 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-10-13 08:10:12,969 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-10-13 08:10:12,975 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-10-13 08:10:12,976 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-10-13 08:10:12,978 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-10-13 08:10:12,979 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-10-13 08:10:12,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:10:12,997 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:10:13,035 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22384,22397] [2021-10-13 08:10:13,038 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22614,22627] [2021-10-13 08:10:13,043 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[22989,23002] [2021-10-13 08:10:13,044 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23053,23066] [2021-10-13 08:10:13,046 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23184,23197] [2021-10-13 08:10:13,047 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/sv-benchmarks/c/forester-heap/dll-sorted-2.i[23248,23261] [2021-10-13 08:10:13,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:10:13,083 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:10:13,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13 WrapperNode [2021-10-13 08:10:13,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:10:13,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:10:13,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:10:13,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:10:13,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:10:13,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:10:13,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:10:13,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:10:13,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,159 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,175 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:10:13,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:10:13,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:10:13,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:10:13,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (1/1) ... [2021-10-13 08:10:13,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:10:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:13,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:10:13,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:10:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 08:10:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 08:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 08:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 08:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 08:10:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 08:10:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 08:10:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:10:13,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:10:14,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:10:14,067 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 08:10:14,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:14 BoogieIcfgContainer [2021-10-13 08:10:14,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:10:14,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:10:14,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:10:14,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:10:14,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:10:12" (1/3) ... [2021-10-13 08:10:14,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27de9021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:10:14, skipping insertion in model container [2021-10-13 08:10:14,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:10:13" (2/3) ... [2021-10-13 08:10:14,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27de9021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:10:14, skipping insertion in model container [2021-10-13 08:10:14,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:14" (3/3) ... [2021-10-13 08:10:14,092 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-2.i [2021-10-13 08:10:14,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:10:14,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 08:10:14,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:10:14,171 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, mConcurrency=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 [2021-10-13 08:10:14,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 08:10:14,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 47 states have (on average 1.872340425531915) internal successors, (88), 53 states have internal predecessors, (88), 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) [2021-10-13 08:10:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:10:14,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:14,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:10:14,210 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:10:14,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:14,216 INFO L82 PathProgramCache]: Analyzing trace with hash 890122502, now seen corresponding path program 1 times [2021-10-13 08:10:14,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:14,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246656517] [2021-10-13 08:10:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:14,230 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:14,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:14,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:14,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 08:10:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:14,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 08:10:14,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:14,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:14,411 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:14,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246656517] [2021-10-13 08:10:14,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246656517] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:10:14,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:10:14,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 08:10:14,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163074809] [2021-10-13 08:10:14,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:10:14,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:14,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:10:14,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:10:14,449 INFO L87 Difference]: Start difference. First operand has 54 states, 47 states have (on average 1.872340425531915) internal successors, (88), 53 states have internal predecessors, (88), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:14,489 INFO L93 Difference]: Finished difference Result 103 states and 167 transitions. [2021-10-13 08:10:14,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:10:14,491 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:10:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:14,507 INFO L225 Difference]: With dead ends: 103 [2021-10-13 08:10:14,507 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 08:10:14,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:10:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 08:10:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-13 08:10:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 47 states have internal predecessors, (57), 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) [2021-10-13 08:10:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-10-13 08:10:14,575 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 6 [2021-10-13 08:10:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:14,576 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-10-13 08:10:14,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-10-13 08:10:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 08:10:14,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:14,577 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 08:10:14,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:14,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:10:14,778 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:10:14,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:14,779 INFO L82 PathProgramCache]: Analyzing trace with hash 889645846, now seen corresponding path program 1 times [2021-10-13 08:10:14,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:14,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48861176] [2021-10-13 08:10:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:14,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:14,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:14,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:14,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 08:10:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:14,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 08:10:14,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:14,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:14,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:14,998 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:14,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48861176] [2021-10-13 08:10:14,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48861176] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:10:14,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:10:14,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 08:10:14,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144526492] [2021-10-13 08:10:15,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:10:15,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:10:15,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:10:15,003 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:15,149 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2021-10-13 08:10:15,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:10:15,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 08:10:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:15,151 INFO L225 Difference]: With dead ends: 98 [2021-10-13 08:10:15,151 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 08:10:15,152 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:10:15,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 08:10:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-13 08:10:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 50 states have internal predecessors, (61), 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) [2021-10-13 08:10:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-10-13 08:10:15,162 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 6 [2021-10-13 08:10:15,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:15,162 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-10-13 08:10:15,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 08:10:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-10-13 08:10:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:10:15,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:15,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:15,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:15,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:10:15,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:10:15,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:15,378 INFO L82 PathProgramCache]: Analyzing trace with hash 586319425, now seen corresponding path program 1 times [2021-10-13 08:10:15,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:15,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309552455] [2021-10-13 08:10:15,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:15,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:15,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:15,384 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:15,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 08:10:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:15,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 08:10:15,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:15,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:10:15,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 08:10:15,619 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:15,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309552455] [2021-10-13 08:10:15,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309552455] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 08:10:15,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:10:15,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 08:10:15,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77297697] [2021-10-13 08:10:15,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:10:15,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 08:10:15,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:10:15,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:10:15,622 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-10-13 08:10:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:10:16,004 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2021-10-13 08:10:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:10:16,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 08:10:16,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:10:16,009 INFO L225 Difference]: With dead ends: 83 [2021-10-13 08:10:16,009 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 08:10:16,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 08:10:16,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 08:10:16,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 49. [2021-10-13 08:10:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 48 states have internal predecessors, (59), 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) [2021-10-13 08:10:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2021-10-13 08:10:16,019 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 9 [2021-10-13 08:10:16,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:10:16,020 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2021-10-13 08:10:16,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-10-13 08:10:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-10-13 08:10:16,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 08:10:16,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:10:16,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:10:16,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:16,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 08:10:16,236 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 08:10:16,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:10:16,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1875453307, now seen corresponding path program 1 times [2021-10-13 08:10:16,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 08:10:16,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879441827] [2021-10-13 08:10:16,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:16,238 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 08:10:16,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 08:10:16,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 08:10:16,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 08:10:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 08:10:16,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:16,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:10:16,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:16,650 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-13 08:10:16,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 168 treesize of output 130 [2021-10-13 08:10:16,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:16,715 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-13 08:10:16,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 64 [2021-10-13 08:10:16,745 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-13 08:10:16,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 73 [2021-10-13 08:10:17,011 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:10:17,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-10-13 08:10:17,033 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:10:17,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 88 [2021-10-13 08:10:17,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2021-10-13 08:10:17,707 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:10:17,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-10-13 08:10:17,720 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:10:17,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 24 [2021-10-13 08:10:17,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 08:10:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:17,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:17,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-10-13 08:10:18,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:18,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 08:10:18,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:18,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:10:18,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90371 treesize of output 89731 [2021-10-13 08:10:23,539 WARN L207 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 743 DAG size of output: 743 [2021-10-13 08:10:23,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81647 treesize of output 81619 [2021-10-13 08:10:25,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 08:10:25,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879441827] [2021-10-13 08:10:25,049 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:10:25,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1216437565] [2021-10-13 08:10:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:25,049 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:25,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 08:10:25,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 08:10:25,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 08:10:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:25,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-13 08:10:25,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:25,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:10:25,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:25,436 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-10-13 08:10:25,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 129 [2021-10-13 08:10:25,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 08:10:25,473 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-10-13 08:10:25,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 122 treesize of output 72 [2021-10-13 08:10:25,483 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-13 08:10:25,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 72 [2021-10-13 08:10:25,626 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:10:25,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 93 [2021-10-13 08:10:25,644 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 08:10:25,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 88 [2021-10-13 08:10:25,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 71 [2021-10-13 08:10:26,107 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:10:26,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-10-13 08:10:26,119 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 08:10:26,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 24 [2021-10-13 08:10:26,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 08:10:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:26,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:26,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-10-13 08:10:26,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:26,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 08:10:26,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:26,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:10:26,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4429 treesize of output 4413 [2021-10-13 08:10:26,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11161 treesize of output 11073 [2021-10-13 08:10:27,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:10:27,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041154101] [2021-10-13 08:10:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:10:27,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 08:10:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:10:27,177 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 08:10:27,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 08:10:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:10:27,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 08:10:27,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 08:10:27,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 08:10:27,529 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-10-13 08:10:27,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 189 treesize of output 151 [2021-10-13 08:10:27,599 INFO L354 Elim1Store]: treesize reduction 98, result has 16.2 percent of original size [2021-10-13 08:10:27,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 181 treesize of output 131 [2021-10-13 08:10:27,617 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-10-13 08:10:27,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 131 [2021-10-13 08:10:27,868 INFO L354 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2021-10-13 08:10:27,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 133 treesize of output 93 [2021-10-13 08:10:27,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2021-10-13 08:10:27,896 INFO L354 Elim1Store]: treesize reduction 73, result has 8.8 percent of original size [2021-10-13 08:10:27,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 98 treesize of output 80 [2021-10-13 08:10:28,465 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 08:10:28,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 52 [2021-10-13 08:10:28,473 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-10-13 08:10:28,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 24 [2021-10-13 08:10:28,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-10-13 08:10:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:10:28,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 08:10:28,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-10-13 08:10:28,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:28,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 08:10:28,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 08:10:28,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 08:10:28,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18345 treesize of output 18249 [2021-10-13 08:10:29,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21152 treesize of output 21080 [2021-10-13 08:10:30,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 08:10:30,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:10:30,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 08:10:30,152 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 08:10:30,153 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 08:10:30,159 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:30,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:30,161 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:30,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:30,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:30,162 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:10:30,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:30,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:30,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-13 08:10:30,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 08:10:30,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:10:30,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:10:30 BoogieIcfgContainer [2021-10-13 08:10:30,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:10:30,789 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:10:30,789 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:10:30,789 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:10:30,790 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:10:14" (3/4) ... [2021-10-13 08:10:30,793 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 08:10:30,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:10:30,794 INFO L168 Benchmark]: Toolchain (without parser) took 18223.73 ms. Allocated memory was 54.5 MB in the beginning and 423.6 MB in the end (delta: 369.1 MB). Free memory was 31.5 MB in the beginning and 176.3 MB in the end (delta: -144.8 MB). Peak memory consumption was 223.0 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:30,795 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:10:30,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.09 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.2 MB in the beginning and 41.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:30,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.04 ms. Allocated memory is still 67.1 MB. Free memory was 41.0 MB in the beginning and 38.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:30,810 INFO L168 Benchmark]: Boogie Preprocessor took 45.75 ms. Allocated memory is still 67.1 MB. Free memory was 38.6 MB in the beginning and 36.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:30,810 INFO L168 Benchmark]: RCFGBuilder took 878.50 ms. Allocated memory is still 67.1 MB. Free memory was 36.6 MB in the beginning and 33.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:30,811 INFO L168 Benchmark]: TraceAbstraction took 16717.52 ms. Allocated memory was 67.1 MB in the beginning and 423.6 MB in the end (delta: 356.5 MB). Free memory was 33.0 MB in the beginning and 176.3 MB in the end (delta: -143.3 MB). Peak memory consumption was 243.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:10:30,811 INFO L168 Benchmark]: Witness Printer took 4.40 ms. Allocated memory is still 423.6 MB. Free memory is still 176.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:10:30,813 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.09 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.2 MB in the beginning and 41.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.04 ms. Allocated memory is still 67.1 MB. Free memory was 41.0 MB in the beginning and 38.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.75 ms. Allocated memory is still 67.1 MB. Free memory was 38.6 MB in the beginning and 36.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 878.50 ms. Allocated memory is still 67.1 MB. Free memory was 36.6 MB in the beginning and 33.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 16717.52 ms. Allocated memory was 67.1 MB in the beginning and 423.6 MB in the end (delta: 356.5 MB). Free memory was 33.0 MB in the beginning and 176.3 MB in the end (delta: -143.3 MB). Peak memory consumption was 243.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.40 ms. Allocated memory is still 423.6 MB. Free memory is still 176.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1038]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data == 1) [L1038] reach_error() - UnprovableResult [Line: 1027]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1062]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1063]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1069]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1070]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 16613.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 24.4ms, AutomataDifference: 629.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 152 SDtfs, 147 SDslu, 48 SDs, 0 SdLazy, 50 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 415.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 33 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 55.9ms SsaConstructionTime, 89.7ms SatisfiabilityAnalysisTime, 259.8ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 76 SizeOfPredicates, 1 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 08:10:30,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fe9de91d-9a3b-4790-8179-394af673b9e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...