./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-1.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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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 74e0b352d931a66de9a161af95640ba630597594 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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 74e0b352d931a66de9a161af95640ba630597594 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:43:02,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:43:02,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:43:02,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:43:02,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:43:02,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:43:02,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:43:02,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:43:02,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:43:02,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:43:02,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:43:02,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:43:02,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:43:02,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:43:02,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:43:02,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:43:02,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:43:02,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:43:02,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:43:02,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:43:02,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:43:02,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:43:02,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:43:02,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:43:02,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:43:02,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:43:02,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:43:02,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:43:02,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:43:02,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:43:02,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:43:02,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:43:02,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:43:02,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:43:02,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:43:02,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:43:02,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:43:02,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:43:02,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:43:02,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:43:02,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:43:02,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:43:02,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:43:02,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:43:02,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:43:02,632 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:43:02,633 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:43:02,633 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:43:02,633 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:43:02,633 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:43:02,639 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:43:02,639 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:43:02,641 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:43:02,641 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:43:02,641 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:43:02,641 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:43:02,642 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:43:02,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:43:02,642 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:43:02,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:43:02,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:43:02,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:43:02,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:43:02,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:43:02,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:43:02,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:43:02,644 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:43:02,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:43:02,644 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:43:02,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:43:02,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:43:02,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:43:02,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:02,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:43:02,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:43:02,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:43:02,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:43:02,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:43:02,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:43:02,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:43:02,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:43:02,647 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e0b352d931a66de9a161af95640ba630597594 [2021-10-13 07:43:02,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:43:02,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:43:02,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:43:02,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:43:02,959 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:43:02,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-10-13 07:43:03,037 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/9d8778f53/af261c1144404b749171c26bf61e1e96/FLAG1d6a0143c [2021-10-13 07:43:03,565 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:43:03,566 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-10-13 07:43:03,590 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/9d8778f53/af261c1144404b749171c26bf61e1e96/FLAG1d6a0143c [2021-10-13 07:43:03,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/9d8778f53/af261c1144404b749171c26bf61e1e96 [2021-10-13 07:43:03,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:43:03,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:43:03,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:03,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:43:03,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:43:03,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:03" (1/1) ... [2021-10-13 07:43:03,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f60e243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:03, skipping insertion in model container [2021-10-13 07:43:03,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:03" (1/1) ... [2021-10-13 07:43:03,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:43:03,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:43:04,167 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-10-13 07:43:04,172 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-10-13 07:43:04,176 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-10-13 07:43:04,177 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-10-13 07:43:04,179 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-10-13 07:43:04,179 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-10-13 07:43:04,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:04,191 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:43:04,228 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-10-13 07:43:04,230 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-10-13 07:43:04,244 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-10-13 07:43:04,245 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-10-13 07:43:04,246 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-10-13 07:43:04,247 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-10-13 07:43:04,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:04,283 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:43:04,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04 WrapperNode [2021-10-13 07:43:04,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:04,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:04,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:43:04,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:43:04,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:04,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:43:04,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:43:04,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:43:04,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,362 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:43:04,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:43:04,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:43:04,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:43:04,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (1/1) ... [2021-10-13 07:43:04,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:04,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:04,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:43:04,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:43:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:43:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:43:04,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:43:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:43:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:43:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:43:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:43:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:43:04,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:43:04,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:43:05,149 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:43:05,150 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 07:43:05,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:05 BoogieIcfgContainer [2021-10-13 07:43:05,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:43:05,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:43:05,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:43:05,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:43:05,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:03" (1/3) ... [2021-10-13 07:43:05,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608e43e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:05, skipping insertion in model container [2021-10-13 07:43:05,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:04" (2/3) ... [2021-10-13 07:43:05,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@608e43e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:05, skipping insertion in model container [2021-10-13 07:43:05,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:05" (3/3) ... [2021-10-13 07:43:05,160 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2021-10-13 07:43:05,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:43:05,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:43:05,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:43:05,235 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 07:43:05,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:43:05,255 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 07:43:05,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:43:05,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:05,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:43:05,262 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 07:43:05,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:05,272 INFO L82 PathProgramCache]: Analyzing trace with hash 245535628, now seen corresponding path program 1 times [2021-10-13 07:43:05,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:43:05,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936785880] [2021-10-13 07:43:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:05,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:43:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:05,446 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 07:43:05,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:43:05,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936785880] [2021-10-13 07:43:05,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936785880] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:05,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:05,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:43:05,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077295335] [2021-10-13 07:43:05,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:43:05,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:43:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:43:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:43:05,469 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 07:43:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:05,487 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2021-10-13 07:43:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:43:05,488 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 07:43:05,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:05,496 INFO L225 Difference]: With dead ends: 85 [2021-10-13 07:43:05,496 INFO L226 Difference]: Without dead ends: 42 [2021-10-13 07:43:05,499 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 07:43:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-13 07:43:05,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-13 07:43:05,529 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 07:43:05,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-13 07:43:05,531 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 5 [2021-10-13 07:43:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:05,532 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-13 07:43:05,532 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 07:43:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-13 07:43:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:43:05,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:05,533 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:43:05,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:43:05,533 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 07:43:05,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:05,534 INFO L82 PathProgramCache]: Analyzing trace with hash -996419023, now seen corresponding path program 1 times [2021-10-13 07:43:05,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:43:05,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199745718] [2021-10-13 07:43:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:05,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:43:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:05,586 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 07:43:05,587 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:43:05,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199745718] [2021-10-13 07:43:05,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199745718] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:05,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:05,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:43:05,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568474692] [2021-10-13 07:43:05,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:43:05,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:43:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:43:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:43:05,596 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 07:43:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:05,634 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-10-13 07:43:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:43:05,634 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 07:43:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:05,635 INFO L225 Difference]: With dead ends: 84 [2021-10-13 07:43:05,635 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 07:43:05,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:43:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 07:43:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-10-13 07:43:05,642 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 07:43:05,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-13 07:43:05,643 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 6 [2021-10-13 07:43:05,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:05,644 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-13 07:43:05,644 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 07:43:05,644 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-13 07:43:05,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:43:05,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:05,645 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:05,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:43:05,645 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 07:43:05,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:05,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1577285312, now seen corresponding path program 1 times [2021-10-13 07:43:05,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:43:05,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247981039] [2021-10-13 07:43:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:05,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:43:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:05,727 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 07:43:05,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:43:05,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247981039] [2021-10-13 07:43:05,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247981039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:05,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:05,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:43:05,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336361097] [2021-10-13 07:43:05,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:43:05,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:43:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:43:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:43:05,731 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 07:43:05,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:05,843 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-13 07:43:05,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:43:05,844 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 07:43:05,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:05,845 INFO L225 Difference]: With dead ends: 72 [2021-10-13 07:43:05,845 INFO L226 Difference]: Without dead ends: 70 [2021-10-13 07:43:05,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:43:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-13 07:43:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2021-10-13 07:43:05,864 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 07:43:05,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-13 07:43:05,865 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2021-10-13 07:43:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:05,866 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-13 07:43:05,866 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 07:43:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-13 07:43:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 07:43:05,867 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:05,867 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:05,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:43:05,868 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 07:43:05,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:05,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1652849314, now seen corresponding path program 1 times [2021-10-13 07:43:05,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:43:05,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110920127] [2021-10-13 07:43:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:05,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:43:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:06,276 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 07:43:06,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:43:06,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110920127] [2021-10-13 07:43:06,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110920127] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:43:06,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809564498] [2021-10-13 07:43:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:06,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:06,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:43:06,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:43:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:06,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 07:43:06,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:06,519 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-13 07:43:06,520 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 07:43:07,181 INFO L354 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2021-10-13 07:43:07,182 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 208 treesize of output 234 [2021-10-13 07:43:07,230 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 221 [2021-10-13 07:43:07,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-10-13 07:43:07,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: No corresponding IProgramVar for |v_#memory_$Pointer$.offset_60| [2021-10-13 07:43:07,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1375069228] [2021-10-13 07:43:07,704 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-13 07:43:07,704 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:43:07,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:43:07,724 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:43:07,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:43:07,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,775 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,776 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:43:07,779 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,781 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,781 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-13 07:43:07,782 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-13 07:43:07,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,784 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:43:07,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-10-13 07:43:07,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,790 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-10-13 07:43:07,790 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:43:07,792 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-13 07:43:07,794 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:43:07,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:43:07,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-10-13 07:43:07,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:07,880 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 07:43:07,881 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 07:43:07,883 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:43:07,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-13 07:43:07,897 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:43:07,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:43:07,940 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:07,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-10-13 07:43:07,944 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:43:07,947 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:197, output treesize:173 [2021-10-13 07:43:07,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:08,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:08,158 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_28| 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 07:43:08,161 INFO L168 Benchmark]: Toolchain (without parser) took 4323.63 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 74.5 MB in the beginning and 73.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:08,161 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 113.2 MB. Free memory is still 92.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:43:08,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.38 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 79.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:08,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.62 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 77.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:08,162 INFO L168 Benchmark]: Boogie Preprocessor took 62.53 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 75.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:08,163 INFO L168 Benchmark]: RCFGBuilder took 755.73 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 50.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:08,164 INFO L168 Benchmark]: TraceAbstraction took 3005.37 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 49.4 MB in the beginning and 73.2 MB in the end (delta: -23.8 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:43:08,166 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 113.2 MB. Free memory is still 92.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 445.38 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 79.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.62 ms. Allocated memory is still 113.2 MB. Free memory was 79.5 MB in the beginning and 77.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.53 ms. Allocated memory is still 113.2 MB. Free memory was 77.4 MB in the beginning and 75.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 755.73 ms. Allocated memory is still 113.2 MB. Free memory was 75.3 MB in the beginning and 50.1 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3005.37 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 49.4 MB in the beginning and 73.2 MB in the end (delta: -23.8 MB). Peak memory consumption was 1.4 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_28| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_28|: 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 07:43:08,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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 07:43:10,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:43:10,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:43:10,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:43:10,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:43:10,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:43:10,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:43:10,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:43:10,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:43:10,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:43:10,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:43:10,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:43:10,693 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:43:10,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:43:10,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:43:10,699 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:43:10,700 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:43:10,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:43:10,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:43:10,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:43:10,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:43:10,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:43:10,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:43:10,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:43:10,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:43:10,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:43:10,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:43:10,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:43:10,718 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:43:10,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:43:10,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:43:10,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:43:10,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:43:10,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:43:10,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:43:10,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:43:10,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:43:10,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:43:10,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:43:10,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:43:10,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:43:10,733 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:43:10,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:43:10,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:43:10,787 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:43:10,787 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:43:10,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:43:10,788 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:43:10,788 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:43:10,788 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:43:10,789 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:43:10,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:43:10,791 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:43:10,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:43:10,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:43:10,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:43:10,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:43:10,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:43:10,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:43:10,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:43:10,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:43:10,793 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:43:10,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:43:10,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:43:10,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:43:10,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:43:10,795 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:43:10,795 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:43:10,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:10,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:43:10,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:43:10,796 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:43:10,796 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:43:10,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:10,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:43:10,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:43:10,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:43:10,798 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e0b352d931a66de9a161af95640ba630597594 [2021-10-13 07:43:11,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:43:11,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:43:11,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:43:11,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:43:11,216 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:43:11,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-10-13 07:43:11,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/2213ac3a6/1cef2a1b33e44f41b476e2f15290b2a8/FLAG8bcdf4a87 [2021-10-13 07:43:11,825 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:43:11,826 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i [2021-10-13 07:43:11,839 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/2213ac3a6/1cef2a1b33e44f41b476e2f15290b2a8/FLAG8bcdf4a87 [2021-10-13 07:43:12,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/data/2213ac3a6/1cef2a1b33e44f41b476e2f15290b2a8 [2021-10-13 07:43:12,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:43:12,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:43:12,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:12,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:43:12,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:43:12,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e50a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12, skipping insertion in model container [2021-10-13 07:43:12,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:43:12,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:43:12,522 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-10-13 07:43:12,528 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-10-13 07:43:12,533 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-10-13 07:43:12,534 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-10-13 07:43:12,535 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-10-13 07:43:12,536 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-10-13 07:43:12,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:12,557 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:43:12,608 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22317,22330] [2021-10-13 07:43:12,619 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22547,22560] [2021-10-13 07:43:12,632 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22877,22890] [2021-10-13 07:43:12,632 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[22941,22954] [2021-10-13 07:43:12,634 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23072,23085] [2021-10-13 07:43:12,635 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_714f5806-5bf4-41cd-8bfa-43b5b3769a22/sv-benchmarks/c/forester-heap/sll-sorted-1.i[23136,23149] [2021-10-13 07:43:12,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:43:12,688 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:43:12,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12 WrapperNode [2021-10-13 07:43:12,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:43:12,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:12,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:43:12,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:43:12,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:43:12,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:43:12,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:43:12,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:43:12,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:43:12,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:43:12,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:43:12,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:43:12,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (1/1) ... [2021-10-13 07:43:12,817 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:43:12,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:12,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:43:12,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:43:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:43:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:43:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:43:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:43:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:43:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:43:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:43:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:43:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:43:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:43:13,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:43:13,495 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 07:43:13,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:13 BoogieIcfgContainer [2021-10-13 07:43:13,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:43:13,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:43:13,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:43:13,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:43:13,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:43:12" (1/3) ... [2021-10-13 07:43:13,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d17c008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:13, skipping insertion in model container [2021-10-13 07:43:13,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:43:12" (2/3) ... [2021-10-13 07:43:13,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d17c008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:43:13, skipping insertion in model container [2021-10-13 07:43:13,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:13" (3/3) ... [2021-10-13 07:43:13,505 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-1.i [2021-10-13 07:43:13,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:43:13,511 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:43:13,557 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:43:13,563 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 07:43:13,563 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:43:13,577 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 07:43:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:43:13,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:13,583 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:43:13,583 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 07:43:13,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:13,589 INFO L82 PathProgramCache]: Analyzing trace with hash 890122502, now seen corresponding path program 1 times [2021-10-13 07:43:13,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:13,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357901893] [2021-10-13 07:43:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:13,602 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:13,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:13,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:13,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:43:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:13,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:43:13,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:13,751 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 07:43:13,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:13,769 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 07:43:13,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:13,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357901893] [2021-10-13 07:43:13,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357901893] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:13,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:13,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:43:13,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678404449] [2021-10-13 07:43:13,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:43:13,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:43:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:43:13,797 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 07:43:13,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:13,825 INFO L93 Difference]: Finished difference Result 103 states and 167 transitions. [2021-10-13 07:43:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:43:13,826 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 07:43:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:13,836 INFO L225 Difference]: With dead ends: 103 [2021-10-13 07:43:13,836 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 07:43:13,839 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 07:43:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 07:43:13,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-13 07:43:13,875 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 07:43:13,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-10-13 07:43:13,878 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 6 [2021-10-13 07:43:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:13,879 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-10-13 07:43:13,879 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 07:43:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-10-13 07:43:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:43:13,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:13,880 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:43:13,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:14,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:43:14,100 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 07:43:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash 889645846, now seen corresponding path program 1 times [2021-10-13 07:43:14,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:14,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110004340] [2021-10-13 07:43:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:14,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:14,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:14,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:14,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:43:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:14,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:43:14,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:14,201 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 07:43:14,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:14,234 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 07:43:14,235 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:14,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110004340] [2021-10-13 07:43:14,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110004340] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:14,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:14,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:43:14,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751636742] [2021-10-13 07:43:14,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:43:14,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:43:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:43:14,243 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 07:43:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:14,330 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2021-10-13 07:43:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:43:14,331 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 07:43:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:14,333 INFO L225 Difference]: With dead ends: 98 [2021-10-13 07:43:14,333 INFO L226 Difference]: Without dead ends: 52 [2021-10-13 07:43:14,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:43:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-13 07:43:14,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-13 07:43:14,350 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 07:43:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-10-13 07:43:14,356 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 6 [2021-10-13 07:43:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:14,356 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-10-13 07:43:14,356 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 07:43:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-10-13 07:43:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:43:14,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:14,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:14,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:14,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:43:14,572 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 07:43:14,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:14,573 INFO L82 PathProgramCache]: Analyzing trace with hash 586319425, now seen corresponding path program 1 times [2021-10-13 07:43:14,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:14,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482744336] [2021-10-13 07:43:14,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:14,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:14,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:14,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:14,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:43:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:14,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:43:14,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:14,722 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 07:43:14,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:14,777 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 07:43:14,777 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:14,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482744336] [2021-10-13 07:43:14,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482744336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:43:14,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:43:14,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:43:14,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962257590] [2021-10-13 07:43:14,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:43:14,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:43:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:43:14,786 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 07:43:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:15,012 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2021-10-13 07:43:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:43:15,013 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 07:43:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:15,014 INFO L225 Difference]: With dead ends: 83 [2021-10-13 07:43:15,015 INFO L226 Difference]: Without dead ends: 81 [2021-10-13 07:43:15,015 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:43:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-13 07:43:15,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 49. [2021-10-13 07:43:15,022 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 07:43:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2021-10-13 07:43:15,023 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 9 [2021-10-13 07:43:15,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:15,024 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2021-10-13 07:43:15,024 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 07:43:15,024 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2021-10-13 07:43:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:43:15,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:15,025 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 07:43:15,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:15,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:43:15,241 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 07:43:15,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:15,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1875453307, now seen corresponding path program 1 times [2021-10-13 07:43:15,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:15,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898132553] [2021-10-13 07:43:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:15,243 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:15,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:15,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:15,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:43:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:15,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-13 07:43:15,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:15,467 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 07:43:15,545 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-13 07:43:15,546 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-10-13 07:43:15,580 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:43:15,581 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 18 treesize of output 18 [2021-10-13 07:43:15,595 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:43:15,804 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-13 07:43:15,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-10-13 07:43:15,828 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 110 treesize of output 102 [2021-10-13 07:43:15,871 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-13 07:43:15,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-10-13 07:43:16,370 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 07:43:16,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-10-13 07:43:16,383 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 07:43:16,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 33 treesize of output 21 [2021-10-13 07:43:16,423 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 07:43:16,447 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 07:43:16,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:16,632 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 07:43:16,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:16,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 07:43:16,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:16,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 07:43:16,809 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 328 treesize of output 320 [2021-10-13 07:43:16,874 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 1527 treesize of output 1495 [2021-10-13 07:43:17,060 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:17,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898132553] [2021-10-13 07:43:17,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:43:17,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [884728633] [2021-10-13 07:43:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:17,062 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:17,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:43:17,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:43:17,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-13 07:43:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:17,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 07:43:17,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:17,304 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 07:43:17,352 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-13 07:43:17,352 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:43:17,384 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-13 07:43:17,385 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-10-13 07:43:17,416 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:43:17,416 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 17 treesize of output 17 [2021-10-13 07:43:17,557 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-13 07:43:17,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-10-13 07:43:17,565 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 110 treesize of output 102 [2021-10-13 07:43:17,595 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-13 07:43:17,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-10-13 07:43:17,960 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 07:43:17,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-10-13 07:43:17,971 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 07:43:17,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 33 treesize of output 21 [2021-10-13 07:43:17,996 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 07:43:18,002 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 07:43:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:18,096 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 07:43:18,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:18,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 07:43:18,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:18,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 07:43:18,249 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 700 treesize of output 684 [2021-10-13 07:43:18,318 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 749 treesize of output 745 [2021-10-13 07:43:21,277 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 07:43:21,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [884728633] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:21,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938282678] [2021-10-13 07:43:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:21,277 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:43:21,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:43:21,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:43:21,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 07:43:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:21,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 07:43:21,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:21,541 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 07:43:21,617 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-10-13 07:43:21,618 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 1 case distinctions, treesize of input 27 treesize of output 23 [2021-10-13 07:43:21,645 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:43:21,646 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 15 treesize of output 15 [2021-10-13 07:43:21,663 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:43:21,878 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-10-13 07:43:21,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-10-13 07:43:21,882 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 110 treesize of output 102 [2021-10-13 07:43:21,908 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-10-13 07:43:21,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-10-13 07:43:22,280 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 07:43:22,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-10-13 07:43:22,288 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-10-13 07:43:22,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 33 treesize of output 21 [2021-10-13 07:43:22,303 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 07:43:22,310 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 07:43:22,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:22,400 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 07:43:22,405 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:22,408 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-10-13 07:43:22,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:22,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-13 07:43:22,555 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 328 treesize of output 320 [2021-10-13 07:43:22,585 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 892 treesize of output 876 [2021-10-13 07:43:25,384 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 07:43:25,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938282678] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:43:25,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-13 07:43:25,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 17 [2021-10-13 07:43:25,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477627574] [2021-10-13 07:43:25,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 07:43:25,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:43:25,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 07:43:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=227, Unknown=1, NotChecked=0, Total=272 [2021-10-13 07:43:25,387 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 07:43:27,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:43:27,514 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2021-10-13 07:43:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:43:27,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 18 [2021-10-13 07:43:27,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:43:27,516 INFO L225 Difference]: With dead ends: 89 [2021-10-13 07:43:27,516 INFO L226 Difference]: Without dead ends: 87 [2021-10-13 07:43:27,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5022.2ms TimeCoverageRelationStatistics Valid=79, Invalid=340, Unknown=1, NotChecked=0, Total=420 [2021-10-13 07:43:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-13 07:43:27,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 64. [2021-10-13 07:43:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 63 states have internal predecessors, (80), 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 07:43:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2021-10-13 07:43:27,526 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 18 [2021-10-13 07:43:27,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:43:27,526 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2021-10-13 07:43:27,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 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 07:43:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2021-10-13 07:43:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 07:43:27,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:43:27,527 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:43:27,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:27,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:43:27,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-13 07:43:28,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:28,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:43:28,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:43:28,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1688066150, now seen corresponding path program 1 times [2021-10-13 07:43:28,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:43:28,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429669116] [2021-10-13 07:43:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:28,141 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:43:28,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:43:28,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:43:28,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:43:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:28,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 07:43:28,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:28,391 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 07:43:28,447 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:43:28,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-13 07:43:28,470 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:43:28,484 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:43:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:28,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 07:43:28,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:28,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 07:43:28,692 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:43:29,046 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-10-13 07:43:29,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 143 [2021-10-13 07:43:29,118 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-10-13 07:43:29,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 178 treesize of output 148 [2021-10-13 07:43:29,180 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-13 07:43:29,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 144 [2021-10-13 07:43:29,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 93 [2021-10-13 07:43:29,213 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-13 07:43:29,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 78 [2021-10-13 07:43:29,214 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 07:43:29,511 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-10-13 07:43:29,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 141 [2021-10-13 07:43:29,540 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-10-13 07:43:29,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 189 treesize of output 180 [2021-10-13 07:43:29,619 INFO L354 Elim1Store]: treesize reduction 214, result has 13.7 percent of original size [2021-10-13 07:43:29,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 148 [2021-10-13 07:43:30,214 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-10-13 07:43:30,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 76 [2021-10-13 07:43:30,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:30,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 26 [2021-10-13 07:43:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:30,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:30,498 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:30,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-13 07:43:30,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:30,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-13 07:43:32,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:32,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-13 07:43:32,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:32,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-13 07:43:35,075 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0.base_65 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_65 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ULTIMATE.start_main_~x~0.base_65))) (= (let ((.cse1 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_65))) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_10)))) (store .cse0 v_ULTIMATE.start_main_~x~0.base_65 (store (store (select .cse0 v_ULTIMATE.start_main_~x~0.base_65) v_ULTIMATE.start_main_~x~0.offset_65 v_DerPreprocessor_9) .cse1 (_ bv1 32)))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_ULTIMATE.start_main_~x~0.base_65)))) (store .cse2 v_ULTIMATE.start_main_~x~0.base_65 (store (store (select .cse2 v_ULTIMATE.start_main_~x~0.base_65) v_ULTIMATE.start_main_~x~0.offset_65 (_ bv0 32)) .cse1 v_DerPreprocessor_7))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (bvadd (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_ULTIMATE.start_main_~x~0.offset_65)))) (store .cse3 v_ULTIMATE.start_main_~x~0.base_65 (store (store (select .cse3 v_ULTIMATE.start_main_~x~0.base_65) v_ULTIMATE.start_main_~x~0.offset_65 (_ bv0 32)) .cse1 v_DerPreprocessor_8))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset) (_ bv4 32)))) (_ bv0 32)))) is different from false [2021-10-13 07:43:35,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:35,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-10-13 07:43:35,136 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 124404 treesize of output 119156 [2021-10-13 07:43:36,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:36,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98844 [2021-10-13 07:43:36,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:43:36,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429669116] [2021-10-13 07:43:36,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:43:36,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [687142205] [2021-10-13 07:43:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:43:36,671 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:43:36,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:43:36,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:43:36,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-13 07:43:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:43:37,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 07:43:37,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:43:37,025 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 07:43:37,074 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-13 07:43:37,074 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-10-13 07:43:37,107 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-13 07:43:37,108 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:43:37,152 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:43:37,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-10-13 07:43:37,286 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:43:37,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:37,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 07:43:37,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:43:37,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 07:43:37,615 INFO L354 Elim1Store]: treesize reduction 58, result has 20.5 percent of original size [2021-10-13 07:43:37,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 211 treesize of output 140 [2021-10-13 07:43:37,686 INFO L354 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2021-10-13 07:43:37,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 175 treesize of output 145 [2021-10-13 07:43:37,764 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-13 07:43:37,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 139 treesize of output 141 [2021-10-13 07:43:37,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:37,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 122 [2021-10-13 07:43:37,795 INFO L354 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2021-10-13 07:43:37,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 89 [2021-10-13 07:43:37,796 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 07:43:38,076 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-10-13 07:43:38,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 259 treesize of output 148 [2021-10-13 07:43:38,099 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-10-13 07:43:38,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 200 treesize of output 191 [2021-10-13 07:43:38,159 INFO L354 Elim1Store]: treesize reduction 214, result has 13.7 percent of original size [2021-10-13 07:43:38,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 188 treesize of output 151 [2021-10-13 07:43:38,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:43:38,716 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-10-13 07:43:38,716 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 36 [2021-10-13 07:43:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:43:38,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:43:41,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:41,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-13 07:43:41,314 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:41,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-10-13 07:43:43,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:43,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-13 07:43:43,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:43,686 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-13 07:43:47,273 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.base_70 (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (let ((.cse1 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_ULTIMATE.start_main_~x~0.base_70)))) (store .cse4 v_ULTIMATE.start_main_~x~0.base_70 (store (store (select .cse4 v_ULTIMATE.start_main_~x~0.base_70) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_14))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (.cse2 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset (_ bv0 32))))) (store .cse3 v_ULTIMATE.start_main_~x~0.base_70 (store (store (select .cse3 v_ULTIMATE.start_main_~x~0.base_70) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))) (or (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_17)))) (store .cse0 v_ULTIMATE.start_main_~x~0.base_70 (store (store (select .cse0 v_ULTIMATE.start_main_~x~0.base_70) (_ bv0 32) v_DerPreprocessor_16) (_ bv4 32) (_ bv1 32)))) .cse1) (bvadd .cse2 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~x~0.base_70)))) (and (= .cse1 (_ bv0 32)) (= .cse2 (_ bv0 32)))))) is different from false [2021-10-13 07:43:47,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:47,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-10-13 07:43:47,333 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 7616 treesize of output 7304 [2021-10-13 07:43:47,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:43:47,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5302 [2021-10-13 07:43:56,027 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.base_70 (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32))) (let ((.cse5 (bvadd (_ bv4 32) c_ULTIMATE.start_main_~x~0.offset))) (let ((.cse2 (select (select (let ((.cse6 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base) .cse5 v_DerPreprocessor_19) c_ULTIMATE.start_main_~x~0.offset (_ bv0 32))))) (store .cse6 v_ULTIMATE.start_main_~x~0.base_70 (store (store (select .cse6 v_ULTIMATE.start_main_~x~0.base_70) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_15))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset))) (let ((.cse3 (select (select (let ((.cse4 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) .cse5 v_DerPreprocessor_18) c_ULTIMATE.start_main_~x~0.offset v_ULTIMATE.start_main_~x~0.base_70)))) (store .cse4 v_ULTIMATE.start_main_~x~0.base_70 (store (store (select .cse4 v_ULTIMATE.start_main_~x~0.base_70) (_ bv0 32) (_ bv0 32)) (_ bv4 32) v_DerPreprocessor_14))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (.cse1 (= .cse2 (_ bv0 32)))) (or (let ((.cse0 (not (= .cse3 v_ULTIMATE.start_main_~x~0.base_70)))) (and (or .cse0 (not .cse1)) (= .cse2 c_ULTIMATE.start_main_~x~0.offset) (= .cse3 c_ULTIMATE.start_main_~x~0.base) (or .cse0 (not (= (bvadd (_ bv4 32) .cse2) (_ bv0 32)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~x~0.base_70)))) (and (= .cse3 (_ bv0 32)) .cse1)))))) is different from false [2021-10-13 07:43:57,794 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 4471 treesize of output 4455 [2021-10-13 07:43:57,978 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 257205 treesize of output 256437 [2021-10-13 07:44:15,886 WARN L207 SmtUtils]: Spent 17.90 s on a formula simplification. DAG size of input: 1166 DAG size of output: 1166 [2021-10-13 07:44:15,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:44:15,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216745530] [2021-10-13 07:44:15,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:44:15,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:44:15,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:44:15,901 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:44:15,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 07:44:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:44:16,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 07:44:16,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:44:16,190 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 07:44:16,242 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-13 07:44:16,242 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:44:16,279 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-13 07:44:16,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-10-13 07:44:16,302 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 0 case distinctions, treesize of input 27 treesize of output 15 [2021-10-13 07:44:16,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:44:16,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 07:44:16,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:44:16,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-10-13 07:44:16,489 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 0 case distinctions, treesize of input 13 treesize of output 9 [2021-10-13 07:44:16,912 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-10-13 07:44:16,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 214 treesize of output 143 [2021-10-13 07:44:17,022 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-10-13 07:44:17,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 178 treesize of output 148 [2021-10-13 07:44:17,101 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-10-13 07:44:17,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 142 treesize of output 144 [2021-10-13 07:44:17,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 93 [2021-10-13 07:44:17,135 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-10-13 07:44:17,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 78 [2021-10-13 07:44:17,135 INFO L883 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2021-10-13 07:44:17,357 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-10-13 07:44:17,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 141 [2021-10-13 07:44:17,385 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-10-13 07:44:17,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 189 treesize of output 180 [2021-10-13 07:44:17,455 INFO L354 Elim1Store]: treesize reduction 214, result has 13.7 percent of original size [2021-10-13 07:44:17,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 148 [2021-10-13 07:44:17,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-13 07:44:17,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 20 [2021-10-13 07:44:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:44:17,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:44:18,004 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:44:18,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-13 07:44:18,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:44:18,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-13 07:44:20,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:44:20,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-13 07:44:20,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:44:20,211 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-13 07:44:22,481 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0.base_76 (_ BitVec 32)) (v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_ULTIMATE.start_main_~x~0.offset_76 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (= (let ((.cse1 (bvadd (_ bv4 32) v_ULTIMATE.start_main_~x~0.offset_76))) (select (select (let ((.cse0 (store |c_#memory_int| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_int| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_DerPreprocessor_23)))) (store .cse0 v_ULTIMATE.start_main_~x~0.base_76 (store (store (select .cse0 v_ULTIMATE.start_main_~x~0.base_76) v_ULTIMATE.start_main_~x~0.offset_76 v_DerPreprocessor_22) .cse1 (_ bv1 32)))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.base| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_ULTIMATE.start_main_~x~0.base_76)))) (store .cse2 v_ULTIMATE.start_main_~x~0.base_76 (store (store (select .cse2 v_ULTIMATE.start_main_~x~0.base_76) v_ULTIMATE.start_main_~x~0.offset_76 (_ bv0 32)) .cse1 v_DerPreprocessor_7))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)) (bvadd (_ bv4 32) (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base (store (select |c_#memory_$Pointer$.offset| c_ULTIMATE.start_main_~x~0.base) c_ULTIMATE.start_main_~x~0.offset v_ULTIMATE.start_main_~x~0.offset_76)))) (store .cse3 v_ULTIMATE.start_main_~x~0.base_76 (store (store (select .cse3 v_ULTIMATE.start_main_~x~0.base_76) v_ULTIMATE.start_main_~x~0.offset_76 (_ bv0 32)) .cse1 v_DerPreprocessor_8))) c_ULTIMATE.start_main_~head~0.base) c_ULTIMATE.start_main_~head~0.offset)))) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_main_~x~0.base_76)))))) is different from false [2021-10-13 07:44:22,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:44:22,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 152 [2021-10-13 07:44:22,544 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 8713 treesize of output 8385 [2021-10-13 07:44:22,565 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:44:22,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9305 [2021-10-13 07:45:13,079 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 62595 treesize of output 62419 [2021-10-13 07:45:15,843 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 138153 treesize of output 137929 [2021-10-13 07:45:20,934 WARN L207 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 1334 DAG size of output: 1334 [2021-10-13 07:45:20,941 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-10-13 07:45:20,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:45:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-13 07:45:20,942 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-13 07:45:20,942 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-13 07:45:20,949 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:20,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:20,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:20,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:20,951 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:20,952 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:45:20,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:21,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:45:21,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-13 07:45:21,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt [2021-10-13 07:45:21,589 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:45:21,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:45:21 BoogieIcfgContainer [2021-10-13 07:45:21,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:45:21,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:45:21,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:45:21,615 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:45:21,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:43:13" (3/4) ... [2021-10-13 07:45:21,618 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:45:21,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:45:21,626 INFO L168 Benchmark]: Toolchain (without parser) took 129514.34 ms. Allocated memory was 58.7 MB in the beginning and 310.4 MB in the end (delta: 251.7 MB). Free memory was 35.5 MB in the beginning and 136.9 MB in the end (delta: -101.3 MB). Peak memory consumption was 149.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:21,626 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:45:21,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 576.94 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 48.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:21,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.13 ms. Allocated memory is still 73.4 MB. Free memory was 48.1 MB in the beginning and 45.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:21,627 INFO L168 Benchmark]: Boogie Preprocessor took 44.65 ms. Allocated memory is still 73.4 MB. Free memory was 45.9 MB in the beginning and 43.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:21,629 INFO L168 Benchmark]: RCFGBuilder took 688.64 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 44.3 MB in the end (delta: -498.6 kB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:21,629 INFO L168 Benchmark]: TraceAbstraction took 128114.53 ms. Allocated memory was 73.4 MB in the beginning and 310.4 MB in the end (delta: 237.0 MB). Free memory was 43.8 MB in the beginning and 136.9 MB in the end (delta: -93.0 MB). Peak memory consumption was 183.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:45:21,629 INFO L168 Benchmark]: Witness Printer took 10.92 ms. Allocated memory is still 310.4 MB. Free memory is still 136.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:45:21,635 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 39.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 576.94 ms. Allocated memory was 58.7 MB in the beginning and 73.4 MB in the end (delta: 14.7 MB). Free memory was 35.3 MB in the beginning and 48.3 MB in the end (delta: -13.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.13 ms. Allocated memory is still 73.4 MB. Free memory was 48.1 MB in the beginning and 45.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.65 ms. Allocated memory is still 73.4 MB. Free memory was 45.9 MB in the beginning and 43.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 688.64 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 44.3 MB in the end (delta: -498.6 kB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 128114.53 ms. Allocated memory was 73.4 MB in the beginning and 310.4 MB in the end (delta: 237.0 MB). Free memory was 43.8 MB in the beginning and 136.9 MB in the end (delta: -93.0 MB). Peak memory consumption was 183.5 MB. Max. memory is 16.1 GB. * Witness Printer took 10.92 ms. Allocated memory is still 310.4 MB. Free memory is still 136.9 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: 1035]: 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: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = ((void*)0) [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int marked = 0; [L1004] COND TRUE __VERIFIER_nondet_int() || !marked [L1007] x->next = malloc(sizeof(SLL)) [L1008] EXPR x->next [L1008] x = x->next [L1009] x->next = ((void*)0) [L1011] COND FALSE !(__VERIFIER_nondet_int()) [L1016] COND FALSE !(\read(marked)) [L1019] x->data = 0 [L1004] COND TRUE __VERIFIER_nondet_int() || !marked [L1007] x->next = malloc(sizeof(SLL)) [L1008] EXPR x->next [L1008] x = x->next [L1009] x->next = ((void*)0) [L1011] COND TRUE __VERIFIER_nondet_int() [L1013] marked = 1 [L1016] COND TRUE \read(marked) [L1017] x->data = 1 [L1004] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1025] marked = 0 [L1027] EXPR x->next [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] EXPR x->next [L1027] EXPR x->next->data [L1027] x->next != ((void*)0) && x->next->data == 0 [L1027] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1032] EXPR x->next [L1032] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1034] EXPR x->next [L1034] x = x->next [L1035] EXPR x->data [L1035] COND TRUE !(x->data == 1) [L1035] reach_error() - UnprovableResult [Line: 1024]: 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: 1055]: 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: 1056]: 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. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 128032.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 11.2ms, AutomataDifference: 2522.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 200 SDtfs, 225 SDslu, 362 SDs, 0 SdLazy, 364 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1964.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 5042.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=4, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 56 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 69.1ms SsaConstructionTime, 171.9ms SatisfiabilityAnalysisTime, 8115.9ms InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 104 ConstructedInterpolants, 6 QuantifiedInterpolants, 1923 SizeOfPredicates, 30 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 2/6 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 07:45:21,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_714f5806-5bf4-41cd-8bfa-43b5b3769a22/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...