./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8 --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 64bit --witnessprinter.graph.data.programhash ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:50:11,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:50:11,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:50:11,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:50:11,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:50:11,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:50:11,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:50:11,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:50:11,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:50:11,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:50:11,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:50:11,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:50:11,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:50:11,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:50:11,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:50:11,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:50:11,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:50:11,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:50:11,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:50:11,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:50:11,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:50:11,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:50:11,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:50:11,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:50:11,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:50:11,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:50:11,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:50:11,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:50:11,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:50:11,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:50:11,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:50:11,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:50:11,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:50:11,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:50:11,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:50:11,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:50:11,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:50:11,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:50:11,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:50:11,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:50:11,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:50:11,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:50:11,628 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:50:11,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:50:11,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:50:11,629 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:50:11,629 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:50:11,629 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:50:11,629 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:50:11,630 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:50:11,630 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:50:11,630 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:50:11,630 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:50:11,630 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:50:11,631 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:50:11,631 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:50:11,631 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:50:11,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:50:11,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:50:11,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:50:11,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:50:11,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:50:11,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:50:11,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:50:11,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:50:11,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:50:11,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:50:11,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:50:11,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:50:11,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:50:11,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:50:11,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:50:11,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:50:11,637 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:50:11,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:50:11,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:50:11,638 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:50:11,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:50:11,639 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_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-11-07 01:50:11,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:50:11,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:50:11,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:50:11,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:50:11,993 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:50:11,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 01:50:12,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/e334680b6/b659f71874ca4b29ae7e60f1b14dcf27/FLAG518bbfa98 [2021-11-07 01:50:12,946 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:50:12,947 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 01:50:13,043 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/e334680b6/b659f71874ca4b29ae7e60f1b14dcf27/FLAG518bbfa98 [2021-11-07 01:50:13,390 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/e334680b6/b659f71874ca4b29ae7e60f1b14dcf27 [2021-11-07 01:50:13,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:50:13,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:50:13,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:50:13,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:50:13,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:50:13,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:50:13" (1/1) ... [2021-11-07 01:50:13,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@900602b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:13, skipping insertion in model container [2021-11-07 01:50:13,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:50:13" (1/1) ... [2021-11-07 01:50:13,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:50:13,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:50:14,947 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,196 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,203 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,228 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,293 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,300 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,311 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,520 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_42b8da49-58aa-4cbb-acb2-eb88aaa92735/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-11-07 01:50:15,783 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,789 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:15,985 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,013 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,015 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,024 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,025 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,032 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,039 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,050 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,056 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,057 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,064 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,069 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,078 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,088 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,092 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,096 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,099 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,110 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,148 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,159 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,184 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,193 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,203 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,255 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,266 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,272 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,275 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,303 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,307 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,341 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,342 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,353 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,360 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,361 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,363 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,365 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,367 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,369 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,373 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,374 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,376 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,378 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,382 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,411 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,412 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,413 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,421 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,470 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,471 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,472 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,472 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,473 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,520 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,521 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,522 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,523 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,529 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,529 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,529 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,530 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,531 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,531 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,599 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 01:50:16,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:50:16,710 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 01:50:16,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7991adc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:16, skipping insertion in model container [2021-11-07 01:50:16,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:50:16,712 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:50:16,715 INFO L168 Benchmark]: Toolchain (without parser) took 3309.22 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 68.3 MB in the beginning and 69.3 MB in the end (delta: -978.4 kB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:50:16,715 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 75.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:50:16,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3304.39 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 68.1 MB in the beginning and 70.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:50:16,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 75.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3304.39 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 68.1 MB in the beginning and 70.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 6088]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8 --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 64bit --witnessprinter.graph.data.programhash ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:50:19,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:50:19,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:50:19,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:50:19,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:50:19,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:50:19,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:50:19,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:50:19,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:50:19,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:50:19,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:50:19,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:50:19,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:50:19,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:50:19,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:50:19,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:50:19,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:50:19,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:50:19,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:50:19,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:50:19,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:50:19,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:50:19,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:50:19,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:50:19,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:50:19,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:50:19,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:50:19,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:50:19,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:50:19,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:50:19,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:50:19,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:50:19,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:50:19,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:50:19,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:50:19,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:50:19,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:50:19,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:50:19,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:50:19,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:50:19,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:50:19,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:50:19,280 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:50:19,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:50:19,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:50:19,282 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:50:19,283 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:50:19,283 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:50:19,283 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:50:19,283 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:50:19,284 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:50:19,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:50:19,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:50:19,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:50:19,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:50:19,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:50:19,287 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:50:19,287 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:50:19,287 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:50:19,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:50:19,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:50:19,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:50:19,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:50:19,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:50:19,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:50:19,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:50:19,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:50:19,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:50:19,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:50:19,290 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:50:19,290 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:50:19,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:50:19,291 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:50:19,291 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:50:19,291 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_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed18c341b13cb38f54b1bbde59f9cd5a73bcebd88430e5620ebca0060f7baed5 [2021-11-07 01:50:19,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:50:19,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:50:19,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:50:19,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:50:19,724 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:50:19,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 01:50:19,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/b65403d76/7fafea678bb244f482aff806e2caa69c/FLAG4fc470b0e [2021-11-07 01:50:20,954 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:50:20,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 01:50:21,002 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/b65403d76/7fafea678bb244f482aff806e2caa69c/FLAG4fc470b0e [2021-11-07 01:50:21,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/data/b65403d76/7fafea678bb244f482aff806e2caa69c [2021-11-07 01:50:21,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:50:21,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:50:21,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:50:21,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:50:21,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:50:21,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:50:21" (1/1) ... [2021-11-07 01:50:21,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217003b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:21, skipping insertion in model container [2021-11-07 01:50:21,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:50:21" (1/1) ... [2021-11-07 01:50:21,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:50:21,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:50:23,522 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_42b8da49-58aa-4cbb-acb2-eb88aaa92735/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-11-07 01:50:24,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:50:24,722 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:50:24,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:50:24,984 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_42b8da49-58aa-4cbb-acb2-eb88aaa92735/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-11-07 01:50:25,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:50:25,320 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:50:25,561 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_42b8da49-58aa-4cbb-acb2-eb88aaa92735/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i[198800,198813] [2021-11-07 01:50:25,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:50:26,137 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:50:26,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26 WrapperNode [2021-11-07 01:50:26,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:50:26,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:50:26,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:50:26,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:50:26,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:26,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:27,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:50:27,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:50:27,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:50:27,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:50:27,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:27,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:27,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:27,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:28,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:28,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:28,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:29,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:50:29,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:50:29,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:50:29,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:50:29,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (1/1) ... [2021-11-07 01:50:29,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:50:29,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:50:29,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:50:29,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:50:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 01:50:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_destroy_interface [2021-11-07 01:50:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_destroy_interface [2021-11-07 01:50:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_push [2021-11-07 01:50:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_push [2021-11-07 01:50:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:50:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:50:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 01:50:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 01:50:29,145 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_channel_push [2021-11-07 01:50:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_channel_push [2021-11-07 01:50:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_output_wakeup [2021-11-07 01:50:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_output_wakeup [2021-11-07 01:50:29,146 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:50:29,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-07 01:50:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:50:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:50:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 01:50:29,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 01:50:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 01:50:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:50:29,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 01:50:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 01:50:29,148 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_peek [2021-11-07 01:50:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_peek [2021-11-07 01:50:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 01:50:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:50:29,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:50:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 01:50:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 01:50:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:50:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 01:50:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 01:50:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 01:50:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_xmit_process [2021-11-07 01:50:29,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_xmit_process [2021-11-07 01:50:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_release [2021-11-07 01:50:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_release [2021-11-07 01:50:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:50:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:50:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_send_frame [2021-11-07 01:50:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_send_frame [2021-11-07 01:50:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 01:50:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 01:50:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 01:50:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:50:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:50:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_disconnect_channel [2021-11-07 01:50:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_disconnect_channel [2021-11-07 01:50:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_unregister_channel [2021-11-07 01:50:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_unregister_channel [2021-11-07 01:50:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 01:50:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 01:50:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 01:50:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 01:50:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_ccp_closed [2021-11-07 01:50:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_ccp_closed [2021-11-07 01:50:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure ppp_mp_explode [2021-11-07 01:50:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ppp_mp_explode [2021-11-07 01:53:38,035 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:53:38,035 INFO L299 CfgBuilder]: Removed 8200 assume(true) statements. [2021-11-07 01:53:38,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:53:38 BoogieIcfgContainer [2021-11-07 01:53:38,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:53:38,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:53:38,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:53:38,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:53:38,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:50:21" (1/3) ... [2021-11-07 01:53:38,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb52744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:53:38, skipping insertion in model container [2021-11-07 01:53:38,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:50:26" (2/3) ... [2021-11-07 01:53:38,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb52744 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:53:38, skipping insertion in model container [2021-11-07 01:53:38,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:53:38" (3/3) ... [2021-11-07 01:53:38,054 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ppp--ppp_generic.ko-entry_point.cil.out.i [2021-11-07 01:53:38,059 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:53:38,059 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:53:38,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:53:38,165 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:53:38,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:53:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 8914 states, 8854 states have (on average 1.527558165800768) internal successors, (13525), 8880 states have internal predecessors, (13525), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) [2021-11-07 01:53:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 01:53:38,320 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:38,323 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:38,324 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:53:38,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:38,334 INFO L85 PathProgramCache]: Analyzing trace with hash 338461214, now seen corresponding path program 1 times [2021-11-07 01:53:38,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:38,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606307045] [2021-11-07 01:53:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:38,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:38,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:38,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:38,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:53:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:53:41,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 1201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:53:41,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:53:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:41,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:53:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:53:41,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:53:41,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606307045] [2021-11-07 01:53:41,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [606307045] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:53:41,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:53:41,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 01:53:41,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799612837] [2021-11-07 01:53:41,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:53:41,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:53:41,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:53:41,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:53:41,708 INFO L87 Difference]: Start difference. First operand has 8914 states, 8854 states have (on average 1.527558165800768) internal successors, (13525), 8880 states have internal predecessors, (13525), 44 states have call successors, (44), 14 states have call predecessors, (44), 14 states have return successors, (44), 40 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:53:57,983 INFO L93 Difference]: Finished difference Result 26660 states and 40863 transitions. [2021-11-07 01:53:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:53:57,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 35 [2021-11-07 01:53:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:53:58,116 INFO L225 Difference]: With dead ends: 26660 [2021-11-07 01:53:58,116 INFO L226 Difference]: Without dead ends: 17624 [2021-11-07 01:53:58,148 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:53:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17624 states. [2021-11-07 01:53:58,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17624 to 16912. [2021-11-07 01:53:58,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16912 states, 16795 states have (on average 1.3964275081869604) internal successors, (23453), 16845 states have internal predecessors, (23453), 88 states have call successors, (88), 28 states have call predecessors, (88), 28 states have return successors, (132), 80 states have call predecessors, (132), 88 states have call successors, (132) [2021-11-07 01:53:58,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16912 states to 16912 states and 23673 transitions. [2021-11-07 01:53:58,753 INFO L78 Accepts]: Start accepts. Automaton has 16912 states and 23673 transitions. Word has length 35 [2021-11-07 01:53:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:53:58,754 INFO L470 AbstractCegarLoop]: Abstraction has 16912 states and 23673 transitions. [2021-11-07 01:53:58,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:53:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 16912 states and 23673 transitions. [2021-11-07 01:53:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:53:58,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:53:58,768 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:53:58,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:53:58,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:53:58,991 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:53:58,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:53:58,991 INFO L85 PathProgramCache]: Analyzing trace with hash 834887098, now seen corresponding path program 1 times [2021-11-07 01:53:58,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:53:58,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924013638] [2021-11-07 01:53:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:53:58,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:53:58,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:53:58,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:53:59,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:54:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:01,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:54:01,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:01,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:02,050 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:02,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924013638] [2021-11-07 01:54:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924013638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:02,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:02,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:54:02,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277376641] [2021-11-07 01:54:02,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:54:02,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:02,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:54:02,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:54:02,054 INFO L87 Difference]: Start difference. First operand 16912 states and 23673 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:03,609 INFO L93 Difference]: Finished difference Result 48018 states and 67468 transitions. [2021-11-07 01:54:03,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:54:03,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-07 01:54:03,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:03,764 INFO L225 Difference]: With dead ends: 48018 [2021-11-07 01:54:03,765 INFO L226 Difference]: Without dead ends: 31181 [2021-11-07 01:54:03,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:54:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31181 states. [2021-11-07 01:54:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31181 to 28800. [2021-11-07 01:54:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28800 states, 28575 states have (on average 1.4010148731408574) internal successors, (40034), 28665 states have internal predecessors, (40034), 168 states have call successors, (168), 56 states have call predecessors, (168), 56 states have return successors, (373), 150 states have call predecessors, (373), 168 states have call successors, (373) [2021-11-07 01:54:05,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28800 states to 28800 states and 40575 transitions. [2021-11-07 01:54:05,199 INFO L78 Accepts]: Start accepts. Automaton has 28800 states and 40575 transitions. Word has length 55 [2021-11-07 01:54:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:05,200 INFO L470 AbstractCegarLoop]: Abstraction has 28800 states and 40575 transitions. [2021-11-07 01:54:05,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 28800 states and 40575 transitions. [2021-11-07 01:54:05,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 01:54:05,209 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:05,209 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:05,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:05,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:05,428 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:54:05,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:05,429 INFO L85 PathProgramCache]: Analyzing trace with hash 871868796, now seen corresponding path program 1 times [2021-11-07 01:54:05,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:05,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54453864] [2021-11-07 01:54:05,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:05,431 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:05,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:05,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:05,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:54:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:08,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:54:08,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:09,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:09,242 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:09,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54453864] [2021-11-07 01:54:09,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54453864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:09,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:09,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:54:09,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832343108] [2021-11-07 01:54:09,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:54:09,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:09,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:54:09,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:54:09,245 INFO L87 Difference]: Start difference. First operand 28800 states and 40575 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:10,770 INFO L93 Difference]: Finished difference Result 81494 states and 114624 transitions. [2021-11-07 01:54:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:54:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-11-07 01:54:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:10,961 INFO L225 Difference]: With dead ends: 81494 [2021-11-07 01:54:10,962 INFO L226 Difference]: Without dead ends: 52769 [2021-11-07 01:54:11,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:54:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52769 states. [2021-11-07 01:54:12,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52769 to 52750. [2021-11-07 01:54:12,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52750 states, 52341 states have (on average 1.3976232781184923) internal successors, (73153), 52501 states have internal predecessors, (73153), 296 states have call successors, (296), 112 states have call predecessors, (296), 112 states have return successors, (659), 268 states have call predecessors, (659), 296 states have call successors, (659) [2021-11-07 01:54:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52750 states to 52750 states and 74108 transitions. [2021-11-07 01:54:13,138 INFO L78 Accepts]: Start accepts. Automaton has 52750 states and 74108 transitions. Word has length 58 [2021-11-07 01:54:13,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:13,138 INFO L470 AbstractCegarLoop]: Abstraction has 52750 states and 74108 transitions. [2021-11-07 01:54:13,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:13,140 INFO L276 IsEmpty]: Start isEmpty. Operand 52750 states and 74108 transitions. [2021-11-07 01:54:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:54:13,147 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:13,147 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:13,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:13,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:13,362 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:54:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1580313678, now seen corresponding path program 1 times [2021-11-07 01:54:13,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:13,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459908127] [2021-11-07 01:54:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:13,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:13,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:13,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:13,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:54:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:16,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1369 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:54:16,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:54:16,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:54:16,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:16,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459908127] [2021-11-07 01:54:16,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459908127] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:16,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:16,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:54:16,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542792867] [2021-11-07 01:54:16,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:54:16,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:54:16,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:54:16,846 INFO L87 Difference]: Start difference. First operand 52750 states and 74108 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:21,355 INFO L93 Difference]: Finished difference Result 158049 states and 222090 transitions. [2021-11-07 01:54:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:54:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 81 [2021-11-07 01:54:21,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:21,749 INFO L225 Difference]: With dead ends: 158049 [2021-11-07 01:54:21,749 INFO L226 Difference]: Without dead ends: 105350 [2021-11-07 01:54:21,847 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:54:22,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105350 states. [2021-11-07 01:54:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105350 to 52738. [2021-11-07 01:54:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52738 states, 52329 states have (on average 1.3975615815322289) internal successors, (73133), 52489 states have internal predecessors, (73133), 296 states have call successors, (296), 112 states have call predecessors, (296), 112 states have return successors, (659), 268 states have call predecessors, (659), 296 states have call successors, (659) [2021-11-07 01:54:24,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52738 states to 52738 states and 74088 transitions. [2021-11-07 01:54:24,417 INFO L78 Accepts]: Start accepts. Automaton has 52738 states and 74088 transitions. Word has length 81 [2021-11-07 01:54:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:24,418 INFO L470 AbstractCegarLoop]: Abstraction has 52738 states and 74088 transitions. [2021-11-07 01:54:24,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 52738 states and 74088 transitions. [2021-11-07 01:54:24,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:54:24,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:24,426 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:24,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:24,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:24,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:54:24,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash 663533838, now seen corresponding path program 1 times [2021-11-07 01:54:24,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:24,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143961044] [2021-11-07 01:54:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:24,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:24,648 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:24,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:54:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:27,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:54:27,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:54:27,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:28,232 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:54:28,233 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:28,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143961044] [2021-11-07 01:54:28,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143961044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:28,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:28,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:54:28,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781290148] [2021-11-07 01:54:28,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:54:28,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:28,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:54:28,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:54:28,235 INFO L87 Difference]: Start difference. First operand 52738 states and 74088 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:30,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:30,948 INFO L93 Difference]: Finished difference Result 125427 states and 175982 transitions. [2021-11-07 01:54:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:54:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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 85 [2021-11-07 01:54:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:31,156 INFO L225 Difference]: With dead ends: 125427 [2021-11-07 01:54:31,157 INFO L226 Difference]: Without dead ends: 72764 [2021-11-07 01:54:31,223 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:54:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72764 states. [2021-11-07 01:54:33,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72764 to 52738. [2021-11-07 01:54:33,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52738 states, 52329 states have (on average 1.397370482906228) internal successors, (73123), 52489 states have internal predecessors, (73123), 296 states have call successors, (296), 112 states have call predecessors, (296), 112 states have return successors, (659), 268 states have call predecessors, (659), 296 states have call successors, (659) [2021-11-07 01:54:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52738 states to 52738 states and 74078 transitions. [2021-11-07 01:54:33,483 INFO L78 Accepts]: Start accepts. Automaton has 52738 states and 74078 transitions. Word has length 85 [2021-11-07 01:54:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:33,484 INFO L470 AbstractCegarLoop]: Abstraction has 52738 states and 74078 transitions. [2021-11-07 01:54:33,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 52738 states and 74078 transitions. [2021-11-07 01:54:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:54:33,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:33,491 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:33,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:33,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:33,714 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:54:33,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:33,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2045527316, now seen corresponding path program 1 times [2021-11-07 01:54:33,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:33,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823785107] [2021-11-07 01:54:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:33,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:33,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:33,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:33,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:54:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:36,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:54:36,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:37,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:54:37,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:37,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823785107] [2021-11-07 01:54:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823785107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:37,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:37,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 01:54:37,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261396143] [2021-11-07 01:54:37,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:54:37,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:54:37,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:54:37,485 INFO L87 Difference]: Start difference. First operand 52738 states and 74078 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:41,977 INFO L93 Difference]: Finished difference Result 129389 states and 181701 transitions. [2021-11-07 01:54:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:54:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2021-11-07 01:54:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:42,152 INFO L225 Difference]: With dead ends: 129389 [2021-11-07 01:54:42,152 INFO L226 Difference]: Without dead ends: 76726 [2021-11-07 01:54:42,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:54:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76726 states. [2021-11-07 01:54:44,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76726 to 76696. [2021-11-07 01:54:44,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76696 states, 76103 states have (on average 1.3963181477734123) internal successors, (106264), 76333 states have internal predecessors, (106264), 424 states have call successors, (424), 168 states have call predecessors, (424), 168 states have return successors, (945), 386 states have call predecessors, (945), 424 states have call successors, (945) [2021-11-07 01:54:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76696 states to 76696 states and 107633 transitions. [2021-11-07 01:54:44,806 INFO L78 Accepts]: Start accepts. Automaton has 76696 states and 107633 transitions. Word has length 87 [2021-11-07 01:54:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:54:44,807 INFO L470 AbstractCegarLoop]: Abstraction has 76696 states and 107633 transitions. [2021-11-07 01:54:44,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 76696 states and 107633 transitions. [2021-11-07 01:54:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:54:44,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:54:44,811 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:54:44,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:54:45,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:54:45,017 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:54:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:54:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 896573821, now seen corresponding path program 1 times [2021-11-07 01:54:45,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:54:45,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104691153] [2021-11-07 01:54:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:54:45,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:54:45,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:54:45,022 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:54:45,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b8da49-58aa-4cbb-acb2-eb88aaa92735/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:54:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:54:47,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:54:47,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:54:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:54:48,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:54:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 01:54:48,386 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:54:48,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104691153] [2021-11-07 01:54:48,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104691153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:54:48,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:54:48,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:54:48,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779024775] [2021-11-07 01:54:48,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:54:48,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:54:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:54:48,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:54:48,389 INFO L87 Difference]: Start difference. First operand 76696 states and 107633 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:54:58,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:54:58,545 INFO L93 Difference]: Finished difference Result 321263 states and 452523 transitions. [2021-11-07 01:54:58,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:54:58,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 87 [2021-11-07 01:54:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:54:59,260 INFO L225 Difference]: With dead ends: 321263 [2021-11-07 01:54:59,260 INFO L226 Difference]: Without dead ends: 244642 [2021-11-07 01:54:59,350 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:54:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244642 states.